APA (7th ed.) Citation

Serpa, O. (1962). Modern english grammar (10.ed.). Francisco Alves Paulo de Azevedo.

Chicago Style (17th ed.) Citation

Serpa, Oswaldo. Modern English Grammar. 10.ed. Francisco Alves Paulo de Azevedo, 1962.

MLA (9th ed.) Citation

Serpa, Oswaldo. Modern English Grammar. 10.ed. Francisco Alves Paulo de Azevedo, 1962.

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