Citazione Stile APA (7a Edizione)

Encarnacion, J. (1974). On appropriate technology, saving and employment. s.n.].

Citazione stile Chigago Style (17a edizione)

Encarnacion, Jose. On Appropriate Technology, Saving and Employment. [S.l: s.n.], 1974.

Citatione MLA (9a ed.)

Encarnacion, Jose. On Appropriate Technology, Saving and Employment. s.n.], 1974.