APA (7. basım) Alıntı

Butler, O. M. (1927). The Philippine islands: A commercial survey. Govt. Print. Off.

Chicago Style (17. basım) Atıf

Butler, O. M. The Philippine Islands: A Commercial Survey. Washington, D.C: Govt. Print. Off, 1927.

MLA (9th ed.) Atıf

Butler, O. M. The Philippine Islands: A Commercial Survey. Govt. Print. Off, 1927.