توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

Bryson, N. S., & Quarles, S. P. (2003). Have you got a license for that tree?: (and can you afford to use it?). Environmental Law Institute.

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

Bryson, Nancy Southard, و Steven P. Quarles. Have You Got a License for That Tree?: (and Can You Afford to Use It?). Washington, D.C.: Environmental Law Institute, 2003.

توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)

Bryson, Nancy Southard, و Steven P. Quarles. Have You Got a License for That Tree?: (and Can You Afford to Use It?). Environmental Law Institute, 2003.