NALDC

Practical hints on running a gas engine

MLA

Yerkes, Arnold P. Practical hints on running a gas engine . U.S. Dept. of Agriculture, 1919.

APA

Yerkes, Arnold P. (1919). Practical hints on running a gas engine. U.S. Dept. of Agriculture.

Chicago

Yerkes, Arnold P. Practical hints on running a gas engine . U.S. Dept. of Agriculture, 1919.