Cita APA (7th ed.)

Legendre, P., & Legendre, L. (2012). Numerical ecology (Third English edition.). Elsevier.

Cita Chicago (17th ed.)

Legendre, Pierre, i Louis Legendre. Numerical Ecology. Third English edition. Amsterdam: Elsevier, 2012.

Cita MLA (9th ed.)

Legendre, Pierre, i Louis Legendre. Numerical Ecology. Third English edition. Elsevier, 2012.