APA (7e ed.) Bronvermelding

Vilbar, A. P. (2011). Effects of ESL courseware for sustainable development on grammar proficiency and reading skills of various learners. Philippine Journal for Language Teaching.

Chicago (17e ed.) Bronvermelding

Vilbar, Aurelio P. "Effects of ESL Courseware for Sustainable Development on Grammar Proficiency and Reading Skills of Various Learners." Philippine Journal for Language Teaching 2011.

MLA (9e ed.) Bronvermelding

Vilbar, Aurelio P. "Effects of ESL Courseware for Sustainable Development on Grammar Proficiency and Reading Skills of Various Learners." Philippine Journal for Language Teaching, 2011.