Cita APA (7th ed.)

Adelson Goldstein, J., Goldman, R., & Shapiro, N. Listening and speaking activity book.

Cita Chicago (17th ed.)

Adelson Goldstein, Jayme, Rheta Goldman, i Norma Shapiro. Listening and Speaking Activity Book.

Cita MLA (8th ed.)

Adelson Goldstein, Jayme, et al. Listening and Speaking Activity Book.