Cita APA (7a ed.)

Schulkers, R. F., & Williams, C. B. (2016). The Gray Ghost: A Seckatary Hawkins Mystery. The University Press of Kentucky.

Cita Chicago Style (17a ed.)

Schulkers, Robert F., y Carll B. Williams. The Gray Ghost: A Seckatary Hawkins Mystery. Lexington: The University Press of Kentucky, 2016.

Cita MLA (8a ed.)

Schulkers, Robert F., y Carll B. Williams. The Gray Ghost: A Seckatary Hawkins Mystery. The University Press of Kentucky, 2016.