Tamil Nadu (India). Department of Industries and Commerce. (1981). Directory of Tamilnadu small scale industrial units (as on 31-12-80), districts Madurai, Tirunelveli, Kanyakumari. Director of Industries and Commerce, Govt. of Tamilnadu.
Trích dẫn kiểu Chicago (xuất bản lần thứ 7)Tamil Nadu (India). Department of Industries and Commerce. Directory of Tamilnadu Small Scale Industrial Units (as on 31-12-80), Districts Madurai, Tirunelveli, Kanyakumari. Madras: Director of Industries and Commerce, Govt. of Tamilnadu, 1981.
Trích dẫn kiểu MLA (xuất bản lần thứ 8)Tamil Nadu (India). Department of Industries and Commerce. Directory of Tamilnadu Small Scale Industrial Units (as on 31-12-80), Districts Madurai, Tirunelveli, Kanyakumari. Director of Industries and Commerce, Govt. of Tamilnadu, 1981.