توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

Oandasan, R. L., & Baetiong, L. R. (2015). Form-focused grammar instruction: Effects on grammar accuracy and oral and writing proficiency in English. College of Education, University of the Philippines Diliman.

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

Oandasan, Richard L., و Lourdes R. Baetiong. Form-focused Grammar Instruction: Effects on Grammar Accuracy and Oral and Writing Proficiency in English. Quezon City: College of Education, University of the Philippines Diliman, 2015.

توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)

Oandasan, Richard L., و Lourdes R. Baetiong. Form-focused Grammar Instruction: Effects on Grammar Accuracy and Oral and Writing Proficiency in English. College of Education, University of the Philippines Diliman, 2015.