APA-referens (7:e uppl.)

Não informado. (1907). Philippine Journal of Science. National Science Development Board.

Chicago-referens (17:e uppl.)

Não informado. Philippine Journal of Science. Manila: National Science Development Board, 1907.

MLA-referens (8:e uppl.)

Não informado. Philippine Journal of Science. National Science Development Board, 1907.

Varning: dessa hänvisningar är inte alltid fullständigt riktiga.