APA (7th ed.) Citation

Pires, M. C. (1950). Portuguese as it is spoken. Livraria Clássica Editora.

Chicago Style (17th ed.) Citation

Pires, Mário C. Portuguese as It Is Spoken. Livraria Clássica Editora, 1950.

MLA (8th ed.) Citation

Pires, Mário C. Portuguese as It Is Spoken. Livraria Clássica Editora, 1950.

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