APA (7th ed.) Citation

Western yellow pine (Pinus ponderosa). [publisher not identified.

Chicago Style (17th ed.) Citation

Western Yellow Pine (Pinus Ponderosa). Washington, D.C.: [publisher not identified.

MLA (9th ed.) Citation

Western Yellow Pine (Pinus Ponderosa). [publisher not identified.

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