Cita APA (7th ed.)

Cootes, J., & Boos, R. (2018). Bulbophyllum section Hirtula. Manila Bulletin.

Cita Chicago (17th ed.)

Cootes, Jim, i Ronny Boos. "Bulbophyllum Section Hirtula." Manila Bulletin 2018.

Cita MLA (9th ed.)

Cootes, Jim, i Ronny Boos. "Bulbophyllum Section Hirtula." Manila Bulletin, 2018.