Παραπομπή σε μορφή APA (7η εκδ.)

Fitter, R., & Farrer, A. (1984). Collins guide to grasses, sedges, rushes and ferns of Britain and Northern Europe.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Fitter, Richard, και Anne Farrer. Collins Guide to Grasses, Sedges, Rushes and Ferns of Britain and Northern Europe. [London] (HarperCollins Publisher), 1984.

Παραπομπή σε μορφή MLA (8th εκδ.)

Fitter, Richard, και Anne Farrer. Collins Guide to Grasses, Sedges, Rushes and Ferns of Britain and Northern Europe. 1984.