Cita APA (7a ed.)

Campbell Houhton, D. (1919). The derivation of the flora of Hawaii.

Cita Chicago Style (17a ed.)

Campbell Houhton, Douglas. The Derivation of the Flora of Hawaii. -, 1919.

Cita MLA (8a ed.)

Campbell Houhton, Douglas. The Derivation of the Flora of Hawaii. 1919.