APA (7th ed.) Citation

Lusar, R., Heller, R. P., & Schindler, M. (1959). German secret weapons of the Second World War. Philosophical Library.

Chicago Style (17th ed.) Citation

Lusar, Rudolf, R. P. Heller, and M. Schindler. German Secret Weapons of the Second World War. New York: Philosophical Library, 1959.

MLA (9th ed.) Citation

Lusar, Rudolf, et al. German Secret Weapons of the Second World War. Philosophical Library, 1959.