Citazione Stile APA (7a Edizione)

Mangahas, M., Meyers, W. H., & Barker, R. (1972). Labor absorption in Philippine agriculture. s.n.

Citazione stile Chigago Style (17a edizione)

Mangahas, Mahar, William H. Meyers, e Randolph Barker. Labor Absorption in Philippine Agriculture. [s.l: s.n, 1972.

Citatione MLA (9a ed.)

Mangahas, Mahar, et al. Labor Absorption in Philippine Agriculture. s.n, 1972.