APA (7th ed.) Citation

Franks, N. L. R., & Zimmerman, E. (1998). U-boat versus aircraft. Grub Street.

Chicago Style (17th ed.) Citation

Franks, Norman L. R., and Eric Zimmerman. U-boat Versus Aircraft. London: Grub Street, 1998.

MLA (9th ed.) Citation

Franks, Norman L. R., and Eric Zimmerman. U-boat Versus Aircraft. Grub Street, 1998.