↑ Marksbury, Richard A. (1982). "社会秩序の立法:ヤップ諸島の事例" . Oceania . 53 (1): 19– 28. doi : 10.1002/j.1834-4461.1982.tb01524.x . ISSN 0029-8077 . JSTOR 40332266 .
↑ Fox, J & Sather, C (編) (1996). Origins, ancestry and alliance: Explorations in Austronesian ethnography. "Ch.4: Rank, hierarchy and routes of migration: Chieftainship in the central Caroline Islands of Micronesia", para. 1. オーストラリア: オーストラリア国立大学出版局。https: //press-files.anu.edu.au/downloads/press/p63701/html/ch04s05.htmlより取得。
↑ Lessa, William A. (1950). "The Place of Ulithi in the Yap Empire" . Human Organization . 9 (1): 16– 18. doi : 10.17730/humo.9.1.y271x91u0850g612 . ISSN 0018-7259 . JSTOR 44124303 .
↑ピーターセン、G (2000)。先住民の島帝国: ヤップとトンガを考慮。太平洋史ジャーナル、35(1) p. 14パラ。 2. https://www.jstor.org/stable/pdf/25169463.pdf?refreqid=excelsior%3A940a5cd783d60539625e4b2646c2fa49&ab_segments=0%2Fbasic_search_gsv2%2Fcontrol&origin=&initiator=から取得
↑ Fox, J & Sather, C (編) (1996). Origins, ancestry and alliance: Explorations in Austronesian ethnography . "Ch.4: Rank, hierarchy and routes of migration: Chieftainship in the central Caroline Islands of Micronesia", para. 7. オーストラリア: オーストラリア国立大学出版局。https ://press-files.anu.edu.au/downloads/press/p63701/html/ch04s05.htmlより取得。
↑ Fox, J & Sather, C (編) (1996). Origins, ancestry and alliance: Explorations in Austronesian ethnography . "Ch. 4: Rank, hierarchy and routes of migration: Chieftainship in the central Caroline Islands of Micronesia", para. 5. オーストラリア: オーストラリア国立大学出版局。https ://press-files.anu.edu.au/downloads/press/p63701/html/ch04s05.htmlより取得。
↑ Fox, J & Sather, C (編) (1996). Origins, ancestry and alliance: Explorations in Austronesian ethnography . "Ch.4: Rank, hierarchy and routes of migration: Chieftainship in the central Caroline Islands of Micronesia", para. 9-11. Australia: Australian National University Press. Retrieved from https://press-files.anu.edu.au/downloads/press/p63701/html/ch04s05.html
↑ Lessa, W (1950). The place of Ulithi in the Yap Empire. Human Organization , 9(1) p. 14 para. 5. Society for Applied Anthropology. Retrieved from https://www.jstor.org/stable/pdf/44124303.pdf?refreqid=excelsior%3Ad3d6abd02f4817ee6268f0eedb2b7b4a&ab_segments=0%2Fbasic_search_gsv2%2Fcontrol&origin=&initiator=
↑ Lessa, W (1950). The place of Ulithi in the Yap Empire. Human Organization , 9(1) p. 18 para. 1. Society for Applied Anthropology. Retrieved from https://www.jstor.org/stable/pdf/44124303.pdf?refreqid=excelsior%3Ad3d6abd02f4817ee6268f0eedb2b7b4a&ab_segments=0%2Fbasic_search_gsv2%2Fcontrol&origin=&initiator=
↑ Lessa, W (1950). The place of Ulithi in the Yap Empire. Human Organization , 9(1) p. 18 para. 2. Society for Applied Anthropology. Retrieved from https://www.jstor.org/stable/pdf/44124303.pdf?refreqid=excelsior%3Ad3d6abd02f4817ee6268f0eedb2b7b4a&ab_segments=0%2Fbasic_search_gsv2%2Fcontrol&origin=&initiator=