Παραπομπή σε μορφή APA (7η εκδ.)

Harding, D. (1992). Ecology projects: Ideas and practicals from the journal of biological education. Institute of Biology.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Harding, David. Ecology Projects: Ideas and Practicals from the Journal of Biological Education. London: Institute of Biology, 1992.

Παραπομπή σε μορφή MLA (9th εκδ.)

Harding, David. Ecology Projects: Ideas and Practicals from the Journal of Biological Education. Institute of Biology, 1992.