Cita APA

Gobbell, J. J., & Gobbell, J. J. (2004). When duty whispers low. New York: St. Martin's Paperbacks.

Citación estilo Chicago

Gobbell, John J., y John J. Gobbell. When Duty Whispers Low. New York: St. Martin's Paperbacks, 2004.

Cita MLA

Gobbell, John J., y John J. Gobbell. When Duty Whispers Low. New York: St. Martin's Paperbacks, 2004.