Cita APA (7a ed.)

Lilienthal, D. E. (1949). This I do believe. Harper.

Cita Chicago Style (17a ed.)

Lilienthal, David Eli. This I Do Believe. New York: Harper, 1949.

Cita MLA (9a ed.)

Lilienthal, David Eli. This I Do Believe. Harper, 1949.