APA (7th ed.) Citation

Nassi, R. J., & Bernstein, B. (1969). Workbook in Spanish two years (2nd ed.). AMSCO School.

Chicago Style (17th ed.) Citation

Nassi, Robert J., and Bernard Bernstein. Workbook in Spanish Two Years. 2nd ed. New York: AMSCO School, 1969.

MLA (9th ed.) Citation

Nassi, Robert J., and Bernard Bernstein. Workbook in Spanish Two Years. 2nd ed. AMSCO School, 1969.