APA (7th ed.) Citation

Hartman, H. M. (1960). Learn biology the easy way. The Cambridge Library.

Chicago Style (17th ed.) Citation

Hartman, Harold M. Learn Biology the Easy Way. The Cambridge Library, 1960.

MLA (8th ed.) Citation

Hartman, Harold M. Learn Biology the Easy Way. The Cambridge Library, 1960.

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