Gaya APA
Tetley, L., Calcutt, D. (2001).
Electronic Navigation Systems (3 Edition 2001).
Great Britain:
Butterworth-Heinemann.
Gaya MLA
Tetley, Laurie., Calcutt, David.
"Electronic Navigation Systems".
3 Edition 2001
Great Britain:
Butterworth-Heinemann,
2001.
Text.