APA

Senthil Kumar (J), Sumathi (R), . (1997). Sales and Service System. : .

Chicago

Senthil Kumar (J), Sumathi (R), . 1997. Sales and Service System. : .

Harvard

Senthil Kumar (J), Sumathi (R), . (1997). Sales and Service System. : .

MLA

Senthil Kumar (J), Sumathi (R), . Sales and Service System. : . 1997.