Cita APA (7th ed.)

Harkness, G. (1981). Understanding the christain faith (festival edition.). Abingdon.

Cita Chicago (17th ed.)

Harkness, Georgia. Understanding the Christain Faith. festival edition. Nashville: Abingdon, 1981.

Cita MLA (9th ed.)

Harkness, Georgia. Understanding the Christain Faith. festival edition. Abingdon, 1981.