Cita APA (7th ed.)

Lewis, R. (2007). Life (6th ed.). McGraw-Hill.

Cita Chicago (17th ed.)

Lewis, Ricki. Life. 6th ed. Boston: McGraw-Hill, 2007.

Cita MLA (9th ed.)

Lewis, Ricki. Life. 6th ed. McGraw-Hill, 2007.