APA (7th ed.) Citation

Hartman M, H. (1959). Learn: Biology: The Easy Way. Cambridge book Company.

Chicago Style (17th ed.) Citation

Hartman M, Harold. Learn: Biology: The Easy Way. USA: Cambridge book Company, 1959.

MLA (9th ed.) Citation

Hartman M, Harold. Learn: Biology: The Easy Way. Cambridge book Company, 1959.

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