Takahashi, Naoko: The Structure of the Ponapean Language. Journal of School of Foreign Languages, 2009, s. 104. Nagoya University of Foreign Studies. Artikkelin verkkoversio. (englanniksi) (Arkistoitu – Internet Archive)
Takahashi, Naoko: The Structure of the Ponapean Language. Journal of School of Foreign Languages, 2009, s. 104. Nagoya University of Foreign Studies. Artikkelin verkkoversio. (englanniksi) (Arkistoitu – Internet Archive)