Παραπομπή σε μορφή APA (7η εκδ.)
Gilbert Karen, Rientjes Sandra, & Toogood Mark. (2004). Farmers and the environment: Assessing the factors that affect farmers' willingness and ability to cooperate with biodiveristy police. European Centre for Nature Conservation (ECNC).
Παραπομπή σε μορφή Chicago (17η εκδ.)
Gilbert Karen, Rientjes Sandra, και Toogood Mark. Farmers and the Environment: Assessing the Factors That Affect Farmers' Willingness and Ability to Cooperate with Biodiveristy Police. European Centre for Nature Conservation (ECNC), 2004.
Παραπομπή σε μορφή MLA (9th εκδ.)
Gilbert Karen, et al. Farmers and the Environment: Assessing the Factors That Affect Farmers' Willingness and Ability to Cooperate with Biodiveristy Police. European Centre for Nature Conservation (ECNC), 2004.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.