APA (7th ed.) Citation

Ferreira, V. (1992). Pensar (3. ed.). Bertrand.

Chicago Style (17th ed.) Citation

Ferreira, Vergílio. Pensar. 3. ed. Lisboa: Bertrand, 1992.

MLA (9th ed.) Citation

Ferreira, Vergílio. Pensar. 3. ed. Bertrand, 1992.

Warning: These citations may not always be 100% accurate.