Gaya APA

Becker-Heins, R. (2014). Ecdis Basics : A Guide to the Operational Use of Electronic Chart Display and Information Systems (Ed. 1). Jerman: Geomares Publishing.

Gaya MLA

Becker-Heins, Ralph. "Ecdis Basics : A Guide to the Operational Use of Electronic Chart Display and Information Systems". Ed. 1 Jerman: Geomares Publishing, 2014. Text.