APA (7th ed.) Citation

Figueiredo, L. C. d., Silveira, M. d. F., & Villaça, O. R. (1994). Let's speak English: Book 1 (3.ed.). Ática W. Roth.

Chicago Style (17th ed.) Citation

Figueiredo, Luciane Cassela de, Marília de Figueiredo Silveira, and Oscar Rubens Villaça. Let's Speak English: Book 1. 3.ed. São Paulo, SP: Ática W. Roth, 1994.

MLA (9th ed.) Citation

Figueiredo, Luciane Cassela de, et al. Let's Speak English: Book 1. 3.ed. Ática W. Roth, 1994.