APA (7th ed.) Citation

Ewing, W. (1918). Construction materials and machinery in Colombia. U.S. Government Printing Office.

Chicago Style (17th ed.) Citation

Ewing, W. Construction Materials and Machinery in Colombia. [Washington?]: U.S. Government Printing Office, 1918.

MLA (9th ed.) Citation

Ewing, W. Construction Materials and Machinery in Colombia. U.S. Government Printing Office, 1918.

Warning: These citations may not always be 100% accurate.