Malo Veintimilla, H. A. (1999). Applying audio-visual aids as one way to reinforce the learning acquisition in the english language with the students of the first level of Institute Technical Superior Sudamericano, Loja 1998.
Čikaški stil citiranja (17. izdanje)Malo Veintimilla, Helga Alexandra. Applying Audio-visual Aids as One Way to Reinforce the Learning Acquisition in the English Language with the Students of the First Level of Institute Technical Superior Sudamericano, Loja 1998. 1999.
MLA način citiranja (9. izdanje)Malo Veintimilla, Helga Alexandra. Applying Audio-visual Aids as One Way to Reinforce the Learning Acquisition in the English Language with the Students of the First Level of Institute Technical Superior Sudamericano, Loja 1998. 1999.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.