Navarro, R. R. (2006). Research-based English vocabulary program for college freshmen. UNP Research Journal.
Citazione stile Chigago Style (17a edizione)Navarro, Remedios Ralleta. "Research-based English Vocabulary Program for College Freshmen." UNP Research Journal 2006.
Citatione MLA (9a ed.)Navarro, Remedios Ralleta. "Research-based English Vocabulary Program for College Freshmen." UNP Research Journal, 2006.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.