APA (7. basım) Alıntı

Philippines (Republic). Office of the President & Presidential Economic Staff. (1969). Provincial profile of Sorsogon. s.n.

Chicago Style (17. basım) Atıf

Philippines (Republic). Office of the President ve Presidential Economic Staff. Provincial Profile of Sorsogon. [Manila: s.n, 1969.

MLA (9th ed.) Atıf

Philippines (Republic). Office of the President ve Presidential Economic Staff. Provincial Profile of Sorsogon. s.n, 1969.