APA (7th ed.) Citation

Aughenbaugh, J. E. I. Common Trees of Pennsylvania.

Chicago Style (17th ed.) Citation

Aughenbaugh, J. E.; Ibberson. Common Trees of Pennsylvania.

MLA (9th ed.) Citation

Aughenbaugh, J. E.; Ibberson. Common Trees of Pennsylvania.

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