APA
American Telephone and Telegraph Company C. P. (., American Telephone and Telegraph Company C. P. (., . (1977). Engineering economy. New York: McGraw-Hill USA.
Chicago
American Telephone and Telegraph Company Construction Plants (Deptt), American Telephone and Telegraph Company Construction Plants (Deptt), . 1977. Engineering economy. New York: McGraw-Hill USA.
Harvard
American Telephone and Telegraph Company C. P. (., American Telephone and Telegraph Company C. P. (., . (1977). Engineering economy. New York: McGraw-Hill USA.
MLA
American Telephone and Telegraph Company Construction Plants (Deptt), American Telephone and Telegraph Company Construction Plants (Deptt), . Engineering economy. New York: McGraw-Hill USA. 1977.
