APA (7th ed.) Citation

Eckert, A. W. (1987). Earth treasures. Perennial Library.

Chicago Style (17th ed.) Citation

Eckert, Allan W. Earth Treasures. New York: Perennial Library, 1987.

MLA (9th ed.) Citation

Eckert, Allan W. Earth Treasures. Perennial Library, 1987.

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