توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

(1982). Elementary PASCAL, as chronicled by John H. Watson / edited with commentaries by Henry Ledgard and Andrew Singer.

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

Elementary PASCAL, as Chronicled by John H. Watson / Edited with Commentaries by Henry Ledgard and Andrew Singer. 1982.

توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)

Elementary PASCAL, as Chronicled by John H. Watson / Edited with Commentaries by Henry Ledgard and Andrew Singer. 1982.