APA (7th ed.) Citation

Lado, R. (1990). Lado English series 6 (New ed.). Prentice Hall.

Chicago Style (17th ed.) Citation

Lado, Robert. Lado English Series 6. New ed. Englewood Cliffs, NJ: Prentice Hall, 1990.

MLA (9th ed.) Citation

Lado, Robert. Lado English Series 6. New ed. Prentice Hall, 1990.