Cita APA (7a ed.)

Gerhardt, H. (2012). Paulo Freire (1921-).

Cita Chicago Style (17a ed.)

Gerhardt, Heinz-Peter. Paulo Freire (1921-). 2012.

Cita MLA (8a ed.)

Gerhardt, Heinz-Peter. Paulo Freire (1921-). 2012.