Gaya APA

Barrass, C., Derrett, D. (2012). Ship Stability for Master and Mates (Ed. 7). USA: Penerbit Butterworth-Heinemann An imprint of Elsevier.

Gaya MLA

Barrass, C.B.., Derrett, D.R.. "Ship Stability for Master and Mates". Ed. 7 USA: Penerbit Butterworth-Heinemann An imprint of Elsevier, 2012. Text.