Cita APA (7th ed.)

Levi, P. (1971). Guide to Greece: Central Greece. Penguin Books.

Cita Chicago (17th ed.)

Levi, Peter. Guide to Greece: Central Greece. Middlesex: Penguin Books, 1971.

Cita MLA (9th ed.)

Levi, Peter. Guide to Greece: Central Greece. Penguin Books, 1971.