Cita APA (7th ed.)

Wiggins, I. L., Porter, D. M., & Anderson, E. F. (1971). Flora of the Galapagos Islands. Stanford University Press.

Cita Chicago (17th ed.)

Wiggins, Ira L., Duncan M. Porter, i Edward F. Anderson. Flora of the Galapagos Islands. Stanford, Calif.: Stanford University Press, 1971.

Cita MLA (8th ed.)

Wiggins, Ira L., et al. Flora of the Galapagos Islands. Stanford University Press, 1971.