Cita APA (7th ed.)

Heinz, V. (1989). Insight guides: Rome. APA Pub.

Cita Chicago (17th ed.)

Heinz, Vestner. Insight Guides: Rome. Singapore: APA Pub, 1989.

Cita MLA (9th ed.)

Heinz, Vestner. Insight Guides: Rome. APA Pub, 1989.