Cita APA (7a ed.)

Legendre, P., & Legendre, L. (1998). Numerical ecology (2nd English ed.). Elsevier.

Cita Chicago Style (17a ed.)

Legendre, Pierre, y Louis Legendre. Numerical Ecology. 2nd English ed. Amsterdam ; New York: Elsevier, 1998.

Cita MLA (8a ed.)

Legendre, Pierre, y Louis Legendre. Numerical Ecology. 2nd English ed. Elsevier, 1998.