Gaya APA
Sanabria, K., Sanabaria, C. (2013).
Academic Ecounters : American Studies 2 : Listening / Speaking .
USA:
Cambridge.
Gaya MLA
Sanabria, Kim., Sanabaria, Carlos.
"Academic Ecounters : American Studies 2 : Listening / Speaking".
USA:
Cambridge,
2013.
Text.