توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

Pennybacker, P. V. (1908). A history of Texas for schools: Also for general reading and for teachers preparing themselves for examination (Rev. (1908) ed.). Mrs. P.V. Pennybacker.

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

Pennybacker, Percy V. A History of Texas for Schools: Also for General Reading and for Teachers Preparing Themselves for Examination. Rev. (1908) ed. Austin, Tex.: Mrs. P.V. Pennybacker, 1908.

توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)

Pennybacker, Percy V. A History of Texas for Schools: Also for General Reading and for Teachers Preparing Themselves for Examination. Rev. (1908) ed. Mrs. P.V. Pennybacker, 1908.