Koh, A. C. E. (1988). Transactional analysis as an approach to understanding secondary school students' discipline and behavioural problems.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Koh, Angeline Cheok Eng. Transactional Analysis as an Approach to Understanding Secondary School Students' Discipline and Behavioural Problems. 1988.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Koh, Angeline Cheok Eng. Transactional Analysis as an Approach to Understanding Secondary School Students' Discipline and Behavioural Problems. 1988.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.