APA (7th ed.) Citation

Heller & Potter. (1966). One nation indivisible. Charles E. Merrill Books.

Chicago Style (17th ed.) Citation

Heller and Potter. One Nation Indivisible. Charles E. Merrill Books, 1966.

MLA (8th ed.) Citation

Heller and Potter. One Nation Indivisible. Charles E. Merrill Books, 1966.

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