Community Development Foundation. (1969). Catalogue of training units.
Citazione stile Chigago Style (17a edizione)Community Development Foundation. Catalogue of Training Units. Norwalk, Conn, 1969.
Citatione MLA (9a ed.)Community Development Foundation. Catalogue of Training Units. 1969.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.