Gaya APA

Barass, C, B., Derrett, D. (2012). Ship Stability for Masters and Mates Seventh Edition (Ed. 7). United Kingdom: Penerbit Butterworth Heinemann.

Gaya MLA

Barass, C., B.., Derrett, D.R.. "Ship Stability for Masters and Mates Seventh Edition". Ed. 7 United Kingdom: Penerbit Butterworth Heinemann, 2012. Text.