APA (7th ed.) Citation

Howell, B. F. (1972). Earth and universe. Merrill.

Chicago Style (17th ed.) Citation

Howell, Benjamin Franklin. Earth and Universe. Columbus, Ohio: Merrill, 1972.

MLA (9th ed.) Citation

Howell, Benjamin Franklin. Earth and Universe. Merrill, 1972.

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