Cita APA (7a ed.)

Harrell, W. A. (1970). The Brazilian Education system: A summary. [s.n.].

Cita Chicago Style (17a ed.)

Harrell, William A. The Brazilian Education System: A Summary. [S.l.]: [s.n.], 1970.

Cita MLA (8a ed.)

Harrell, William A. The Brazilian Education System: A Summary. [s.n.], 1970.