توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

Ruppel, W. (2011). Wiley GAAP for governments 2011: Interpretation and application of generally accepted accounting principles for state and local governments. Wiley.

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

Ruppel, Warren. Wiley GAAP for Governments 2011: Interpretation and Application of Generally Accepted Accounting Principles for State and Local Governments. Hoboken, N.J.: Wiley, 2011.

توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)

Ruppel, Warren. Wiley GAAP for Governments 2011: Interpretation and Application of Generally Accepted Accounting Principles for State and Local Governments. Wiley, 2011.