Albrecht, H. (1989). Agricultural extension .V.1: Basic concepts and methods. Wiley Eastern Limited.
Chicago Edition CitationAlbrecht, H. Agricultural Extension .V.1: Basic Concepts and Methods. New Delhi: Wiley Eastern Limited, 1989.
MLA Edition CitationAlbrecht, H. Agricultural Extension .V.1: Basic Concepts and Methods. Wiley Eastern Limited, 1989.
Advarsel: Disse citationer er muligvist ikke 100% nøjagtige.