Cita APA

Stephenson, T., & Whittle, S. (2013). The warbler guide. Princeton, N.J.: Princeton University Press.

Citación estilo Chicago

Stephenson, Tom, y Scott Whittle. The Warbler Guide. Princeton, N.J.: Princeton University Press, 2013.

Cita MLA

Stephenson, Tom, y Scott Whittle. The Warbler Guide. Princeton, N.J.: Princeton University Press, 2013.