APA (7th ed.) Citation

Steck-Vaughn School Supply. (2004). E S L building english proficiency. Steck-Vaughn Company.

Chicago Style (17th ed.) Citation

Steck-Vaughn School Supply. E S L Building English Proficiency. Nueva York: Steck-Vaughn Company, 2004.

MLA (9th ed.) Citation

Steck-Vaughn School Supply. E S L Building English Proficiency. Steck-Vaughn Company, 2004.