Παραπομπή σε μορφή APA (7η εκδ.)

Gutierrez, L. T., & Fey, W. R. (1980). Ecosystem succession: A general hypothesis and a test model of a grassland. Massachusetts Institute of Technology.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Gutierrez, Luis T., και Willard R. Fey. Ecosystem Succession: A General Hypothesis and a Test Model of a Grassland. Cambridge: Massachusetts Institute of Technology, 1980.

Παραπομπή σε μορφή MLA (9th εκδ.)

Gutierrez, Luis T., και Willard R. Fey. Ecosystem Succession: A General Hypothesis and a Test Model of a Grassland. Massachusetts Institute of Technology, 1980.