APA (7th ed.) Citation

Petersen, G. B. (1983). Careers in the United States merchant marine. Lodestar Books.

Chicago Style (17th ed.) Citation

Petersen, Gwenn Boardman. Careers in the United States Merchant Marine. New York: Lodestar Books, 1983.

MLA (9th ed.) Citation

Petersen, Gwenn Boardman. Careers in the United States Merchant Marine. Lodestar Books, 1983.

Warning: These citations may not always be 100% accurate.