APA (7th ed.) Citation

(1993). Explorers and discoverers of the world. Gale Research.

Chicago Style (17th ed.) Citation

Explorers and Discoverers of the World. Detroit u.a: Gale Research, 1993.

MLA (9th ed.) Citation

Explorers and Discoverers of the World. Gale Research, 1993.

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