Gaya APA

Risuandi, Y., Anisah, . (2019). Watchkeeping for Deck Officers and International Regulations for Preventing Collisions at Sea 1972, Amandement 1981, 1987, 1993, 2001, 2007 and 2013 (Cet. 1). : .

Gaya MLA

Risuandi, Yan., Anisah, . "Watchkeeping for Deck Officers and International Regulations for Preventing Collisions at Sea 1972, Amandement 1981, 1987, 1993, 2001, 2007 and 2013". Cet. 1 : , 2019. Text.