Cita APA (7th ed.)
Hoagland, E. (1979). African calliope: A journey to the Sudan. Penguin Books.
Cita Chicago (17th ed.)
Hoagland, Edward. African Calliope: A Journey to the Sudan. New York: Penguin Books, 1979.
Cita MLA (9th ed.)
Hoagland, Edward. African Calliope: A Journey to the Sudan. Penguin Books, 1979.
Atenció: Aquestes cites poden no estar 100% correctes.