Παραπομπή σε μορφή APA (7η εκδ.)

Willison, M. J. H. (1992). Science and the management of protected areas: Proceedings of an international conference, held at Acadia University, Nova Scotia, Canada, 14-19 May 1991. Elsevier.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Willison, Martin J. H. Science and the Management of Protected Areas: Proceedings of an International Conference, Held at Acadia University, Nova Scotia, Canada, 14-19 May 1991. Amsterdam: Elsevier, 1992.

Παραπομπή σε μορφή MLA (9th εκδ.)

Willison, Martin J. H. Science and the Management of Protected Areas: Proceedings of an International Conference, Held at Acadia University, Nova Scotia, Canada, 14-19 May 1991. Elsevier, 1992.