Cita APA (7a ed.)

Campbell, L. (1989). Insight guides: New York. APA Pub.

Cita Chicago Style (17a ed.)

Campbell, Louisa. Insight Guides: New York. Singapore: APA Pub, 1989.

Cita MLA (9a ed.)

Campbell, Louisa. Insight Guides: New York. APA Pub, 1989.