APA (7th ed.) Citation

Schofield, B. B., & Martyn, L. F. (1968). The Rescue Ships. Blackwood.

Chicago Style (17th ed.) Citation

Schofield, B. B., and L. F. Martyn. The Rescue Ships. Edinburgh, London: Blackwood, 1968.

MLA (9th ed.) Citation

Schofield, B. B., and L. F. Martyn. The Rescue Ships. Blackwood, 1968.