توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

Duano, V. T. (2018). Labor relations: Principles and cases (with 1990-2017 bar questions as practical exercises) (Second edition 2018.). Central Book Supply, Inc.

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

Duano, Voltaire T. Labor Relations: Principles and Cases (with 1990-2017 Bar Questions as Practical Exercises). Second edition 2018. Quezon City: Central Book Supply, Inc, 2018.

توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)

Duano, Voltaire T. Labor Relations: Principles and Cases (with 1990-2017 Bar Questions as Practical Exercises). Second edition 2018. Central Book Supply, Inc, 2018.