APA

Wirshing J. R., Wirshing R. H., . (2004). Schaum’s outline of theory and problems of introductory surveying. New Delhi: The McGraw-Hill Publishing Company.

Chicago

Wirshing James R, Wirshing Roy H, . 2004. Schaum’s outline of theory and problems of introductory surveying. New Delhi: The McGraw-Hill Publishing Company.

Harvard

Wirshing J. R., Wirshing R. H., . (2004). Schaum’s outline of theory and problems of introductory surveying. New Delhi: The McGraw-Hill Publishing Company.

MLA

Wirshing James R, Wirshing Roy H, . Schaum’s outline of theory and problems of introductory surveying. New Delhi: The McGraw-Hill Publishing Company. 2004.