توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

Demographic Research Centre (Kerala, India). (1977). Demographic report of Kerala, 1906-61, with an addendum for 1971. Demographic Research Centre, Bureau of Economics and Statistics, Govt. of Kerala.

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

Demographic Research Centre (Kerala, India). Demographic Report of Kerala, 1906-61, with an Addendum for 1971. Trivandrum: Demographic Research Centre, Bureau of Economics and Statistics, Govt. of Kerala, 1977.

توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)

Demographic Research Centre (Kerala, India). Demographic Report of Kerala, 1906-61, with an Addendum for 1971. Demographic Research Centre, Bureau of Economics and Statistics, Govt. of Kerala, 1977.