APA (7th ed.) Citation

Frey, B. J. (1970). Basic helps for teaching English as a second language. Palo Verde Pub. Co..

Chicago Style (17th ed.) Citation

Frey, Betty J. Basic Helps for Teaching English as a Second Language. Tucson, Ariz.: Palo Verde Pub. Co., 1970.

MLA (8th ed.) Citation

Frey, Betty J. Basic Helps for Teaching English as a Second Language. Palo Verde Pub. Co., 1970.