APA
(2012). Indian Optician Vol. 44 (250 – 251) Jan – April. : .
Chicago
2012. Indian Optician Vol. 44 (250 – 251) Jan – April. : .
Harvard
(2012). Indian Optician Vol. 44 (250 – 251) Jan – April. : .
MLA
Indian Optician Vol. 44 (250 – 251) Jan – April. : . 2012.