Cita APA (7a ed.)

Simmel, J. M., Winston, R., & Winston, C. (1980). Double agent - triple cross. Hamlyn.

Cita Chicago Style (17a ed.)

Simmel, Johannes Mario, Richard Winston, y Clara Winston. Double Agent - Triple Cross. Feltham, Middlesex: Hamlyn, 1980.

Cita MLA (8a ed.)

Simmel, Johannes Mario, et al. Double Agent - Triple Cross. Hamlyn, 1980.