APA (7. basım) Alıntı

Hofer, H. (1991). Insight guides: Singapore. APA Pub.

Chicago Style (17. basım) Atıf

Hofer, Hans. Insight Guides: Singapore. Singapore: APA Pub, 1991.

MLA (9th ed.) Atıf

Hofer, Hans. Insight Guides: Singapore. APA Pub, 1991.