Siow, G. A. (1994). The School Psychological Services in Singapore: A description of its work with primary school children.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Siow, Gabrielle Antoinettene. The School Psychological Services in Singapore: A Description of Its Work with Primary School Children. 1994.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Siow, Gabrielle Antoinettene. The School Psychological Services in Singapore: A Description of Its Work with Primary School Children. 1994.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.