Ballesteros, J. D. The written English vocabulary of fourth year students in four public secondary schools in Greater Manila.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Ballesteros, Jesusa D. The Written English Vocabulary of Fourth Year Students in Four Public Secondary Schools in Greater Manila.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Ballesteros, Jesusa D. The Written English Vocabulary of Fourth Year Students in Four Public Secondary Schools in Greater Manila.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.