APA (7th ed.) Citation

HARTMAN, H. M. (1980). Learn Biology: The easy way. Greystone.

Chicago Style (17th ed.) Citation

HARTMAN, Harold M. Learn Biology: The Easy Way. Greystone, 1980.

MLA (8th ed.) Citation

HARTMAN, Harold M. Learn Biology: The Easy Way. Greystone, 1980.

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