APA (7th ed.) Citation

Roberts, K. (1937). Northwest passage. Fawcett Publications.

Chicago Style (17th ed.) Citation

Roberts, Kenneth. Northwest Passage. Greenwich: Fawcett Publications, 1937.

MLA (9th ed.) Citation

Roberts, Kenneth. Northwest Passage. Fawcett Publications, 1937.

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