APA (7th ed.) Citation

Samelson, W. (1980). English as a second language, phase four: Let's continue. Reston Publishing.

Chicago Style (17th ed.) Citation

Samelson, William. English as a Second Language, Phase Four: Let's Continue. Reston, Virginia: Reston Publishing, 1980.

MLA (9th ed.) Citation

Samelson, William. English as a Second Language, Phase Four: Let's Continue. Reston Publishing, 1980.