Cita APA

L. Allen, J., & John L. Allen. (2008). Student atlas of world geography. Dubuque IA: McGraw-Hill.

Chicago Style Citation

L. Allen, John, i John L. Allen. Student Atlas of World Geography. Dubuque IA: McGraw-Hill, 2008.

Cita MLA

L. Allen, John, i John L. Allen. Student Atlas of World Geography. Dubuque IA: McGraw-Hill, 2008.

Atenció: Aquestes cites poden no estar 100% correctes.