Citazione Stile APA (7a Edizione)

Pugne, M. F. (1962). Essential qualities that should be emphasized in the professional training of competent trade teachers. s.n.].

Citazione stile Chigago Style (17a edizione)

Pugne, Melquiades F. Essential Qualities That Should Be Emphasized in the Professional Training of Competent Trade Teachers. [Quezon City: s.n.], 1962.

Citatione MLA (9a ed.)

Pugne, Melquiades F. Essential Qualities That Should Be Emphasized in the Professional Training of Competent Trade Teachers. s.n.], 1962.