Cita APA (7a ed.)

Layberry, R. A., Lafontaine, J. D., & Hall, P. W. (1998). The Butterflies of Canada. University of Toronto Press.

Cita Chicago Style (17a ed.)

Layberry, Ross A., J. Donald Lafontaine, y Peter W. Hall. The Butterflies of Canada. Buffalo [New York]: University of Toronto Press, 1998.

Cita MLA (8a ed.)

Layberry, Ross A., et al. The Butterflies of Canada. University of Toronto Press, 1998.