APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (8th ed.) Citation

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