APA (7th ed.) Citation

Heyerdahl, T. (1971). The Ra expeditions. Allen and Unwin.

Chicago Style (17th ed.) Citation

Heyerdahl, Thor. The Ra Expeditions. London,: Allen and Unwin, 1971.

MLA (8th ed.) Citation

Heyerdahl, Thor. The Ra Expeditions. Allen and Unwin, 1971.

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