Gaya APA

Roberts, P. (2002). Watchkeeping Safety and Cargo Management in Port (Ed. 1 Rev. 1). United Kingdom: Penerbit The Nautical Institute.

Gaya MLA

Roberts, Peter. "Watchkeeping Safety and Cargo Management in Port". Ed. 1 Rev. 1 United Kingdom: Penerbit The Nautical Institute, 2002. Text.