Gaya APA

(Pengarang), R, R, H. (1990). MARINE NAVIGATION : PILOTING AND CELESTIAL AND ELECTRONIC NAVIGATION (3). MARYLAND :: .

Gaya MLA

(Pengarang), RICHARD, R., HOBBS. "MARINE NAVIGATION : PILOTING AND CELESTIAL AND ELECTRONIC NAVIGATION". 3 MARYLAND :: , 1990. Monograf.