American Psychological Association
Doria, R S, & Singh, Avadesh K, & Singh, Surendra ( 1990 ). Man Development and Environment ( 00 ed. ). Ashish Publicshing House.
Modern Language Association
Doria, R S and Singh, Avadesh K and Singh, Surendra. Man Development and Environment . Ashish Publicshing House. 1990
Chicago Citation
Doria, R S and Singh, Avadesh K and Singh, Surendra. Man Development and Environment . 00 .New Delhi
: Ashish Publicshing House, 1990.
American Medical Association
Doria, R S and Singh, Avadesh K and Singh, Surendra. Man Development and Environment . Ashish Publicshing House; 1990.