Παραπομπή σε μορφή APA (7η εκδ.)

Extension, Education and Communication Service, Research, Extension and Training Division, Sustainable Development Department, & Rivera, W. M. (2003). Agricultural extension, rural development and the food security challenge.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Extension, Education and Communication Service, Extension and Training Division Research, Sustainable Development Department, και William McLeod Rivera. Agricultural Extension, Rural Development and the Food Security Challenge. 2003.

Παραπομπή σε μορφή MLA (9th εκδ.)

Extension, Education and Communication Service, et al. Agricultural Extension, Rural Development and the Food Security Challenge. 2003.