توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

Lapid-Ladwingon, R., Valdez, A. B., & Mariani, M. J. P. (2019). The 21st century skills of the ALS graduates enrolled in the College of Engineering and Information Technology: A basis for college policy recommendation. KSU Research Journal.

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

Lapid-Ladwingon, Ruth, Angeline B. Valdez, و Mathew Jun P. Mariani. "The 21st Century Skills of the ALS Graduates Enrolled in the College of Engineering and Information Technology: A Basis for College Policy Recommendation." KSU Research Journal 2019.

توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)

Lapid-Ladwingon, Ruth, et al. "The 21st Century Skills of the ALS Graduates Enrolled in the College of Engineering and Information Technology: A Basis for College Policy Recommendation." KSU Research Journal, 2019.