APA (7th ed.) Citation

Campoverde Jumbo, A. C. (2015). The implementation of a portfolio to improve the written use of present perfect tense in a case study of a 2nd year student of bachillerato, in parallel A at Vicente Anda Aguirre high school, academic year 2013-2014.

Chicago Style (17th ed.) Citation

Campoverde Jumbo, Angela Cecilia. The Implementation of a Portfolio to Improve the Written Use of Present Perfect Tense in a Case Study of a 2nd Year Student of Bachillerato, in Parallel A at Vicente Anda Aguirre High School, Academic Year 2013-2014. 2015.

MLA (9th ed.) Citation

Campoverde Jumbo, Angela Cecilia. The Implementation of a Portfolio to Improve the Written Use of Present Perfect Tense in a Case Study of a 2nd Year Student of Bachillerato, in Parallel A at Vicente Anda Aguirre High School, Academic Year 2013-2014. 2015.