Cita APA (7th ed.)

ebrary, Inc, & Alonso, D. J. (2011). English as a second language. Nova Science Publishers.

Cita Chicago (17th ed.)

ebrary, Inc, i David J. Alonso. English as a Second Language. New York: Nova Science Publishers, 2011.

Cita MLA (9th ed.)

ebrary, Inc, i David J. Alonso. English as a Second Language. Nova Science Publishers, 2011.