APA Citation

Alrich, P., & Higgins, W. E. Bulbophyllums of du Petit-Thours.

Chicago Style Citation

Alrich, Peggy, and Wesley E. Higgins. Bulbophyllums of Du Petit-Thours.

MLA Citation

Alrich, Peggy, and Wesley E. Higgins. Bulbophyllums of Du Petit-Thours.

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