APA (7th ed.) Citation

Lange, A., & Soudart, E. A. (1981). Treatise on cryptography: Plus many problems in french for the solver. Aegena Park Press.

Chicago Style (17th ed.) Citation

Lange, André, and E. A. Soudart. Treatise on Cryptography: Plus Many Problems in French for the Solver. Laguna Hills, California: Aegena Park Press, 1981.

MLA (9th ed.) Citation

Lange, André, and E. A. Soudart. Treatise on Cryptography: Plus Many Problems in French for the Solver. Aegena Park Press, 1981.