Cita APA

Taylor, K. (1993). A birders guide to british columbia. [S. l.]: [s. n.].

Citación estilo Chicago

Taylor, Keith. A Birders Guide to British Columbia. [S. l.]: [s. n.], 1993.

Cita MLA

Taylor, Keith. A Birders Guide to British Columbia. [S. l.]: [s. n.], 1993.