APA-Zitierstil (7. Ausg.)

Fonseca, J., & Buthlay, K. (1971). New spoken english: Basic course (9.ed.). Nacional São Paulo Editora.

Chicago-Zitierstil (17. Ausg.)

Fonseca, João, und Kenneth Buthlay. New Spoken English: Basic Course. 9.ed. São Paulo, SP: Nacional São Paulo Editora, 1971.

MLA-Zitierstil (9. Ausg.)

Fonseca, João, und Kenneth Buthlay. New Spoken English: Basic Course. 9.ed. Nacional São Paulo Editora, 1971.