APA (7th ed.) Citation

Janzen, F., & Rivers, B. (1981). Oil tankers to South Africa. Shipping Research Bureau.

Chicago Style (17th ed.) Citation

Janzen, Frank, and Bernard Rivers. Oil Tankers to South Africa. Amsterdam, Netherlands: Shipping Research Bureau, 1981.

MLA (9th ed.) Citation

Janzen, Frank, and Bernard Rivers. Oil Tankers to South Africa. Shipping Research Bureau, 1981.