Cita APA (7th ed.)

Wymer, N., & Cronin, A. J. (1999). The citadel. Pearson Education.

Cita Chicago (17th ed.)

Wymer, Norman, i A. J. Cronin. The Citadel. Harlow, England: Pearson Education, 1999.

Cita MLA (9th ed.)

Wymer, Norman, i A. J. Cronin. The Citadel. Pearson Education, 1999.