Gaya APA

Delfs, H., Knebl, H. (2007). Introduction to Cryptography Principles and Applications (Second Edition). Berlin: Springer-Verlag Berlin Heidelberg.

Gaya MLA

Delfs, Hans., Knebl, Helmut. "Introduction to Cryptography Principles and Applications". Second Edition Berlin: Springer-Verlag Berlin Heidelberg, 2007. Buku.