Cita APA (7th ed.)

Duverger, M. (1967). An introduction to the Social Sciences. s.n.].

Cita Chicago (17th ed.)

Duverger, Maurice. An Introduction to the Social Sciences. [s.l: s.n.], 1967.

Cita MLA (9th ed.)

Duverger, Maurice. An Introduction to the Social Sciences. s.n.], 1967.