APA (7th ed.) Citation

(1907). Hardy catalpa (Catalpa speciosa). [publisher not identified].

Chicago Style (17th ed.) Citation

Hardy Catalpa (Catalpa Speciosa). Washington, D.C.: [publisher not identified], 1907.

MLA (9th ed.) Citation

Hardy Catalpa (Catalpa Speciosa). [publisher not identified], 1907.

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