APA (7th ed.) Citation

Castagnaro, R. A. (1989). A Portuguese primer. Lang.

Chicago Style (17th ed.) Citation

Castagnaro, R. Anthony. A Portuguese Primer. New York u.a: Lang, 1989.

MLA (9th ed.) Citation

Castagnaro, R. Anthony. A Portuguese Primer. Lang, 1989.

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