توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

(1978). National internal revenue code of 1977: As amended by PD nos. 1254, 1255, 1351, 1353, 1356, 1357 and 1358 with introductory features: includes selected implementing regulations and local tax laws. National Book Store.

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

National Internal Revenue Code of 1977: As Amended by PD Nos. 1254, 1255, 1351, 1353, 1356, 1357 and 1358 with Introductory Features: Includes Selected Implementing Regulations and Local Tax Laws. Manila: National Book Store, 1978.

توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)

National Internal Revenue Code of 1977: As Amended by PD Nos. 1254, 1255, 1351, 1353, 1356, 1357 and 1358 with Introductory Features: Includes Selected Implementing Regulations and Local Tax Laws. National Book Store, 1978.