Cita APA (7th ed.)
(1955). McGraw-Hill Pocket Travel Guides. McGraw-Hill.
Cita Chicago (17th ed.)
McGraw-Hill Pocket Travel Guides. London: McGraw-Hill, 1955.
Cita MLA (9th ed.)
McGraw-Hill Pocket Travel Guides. McGraw-Hill, 1955.
Atenció: Aquestes cites poden no estar 100% correctes.