Dyfyniad APA

Roth,Lawerence O, & Field,Harry L. (1991). Introduction to agriucltural engineering: A problem solving approach. Chapman & Hall.

Dyfyniad Arddull Chicago

Roth,Lawerence O, and Field,Harry L. Introduction to Agriucltural Engineering: A Problem Solving Approach. London: Chapman & Hall, 1991.

Dyfyniad MLA

Roth,Lawerence O, and Field,Harry L. Introduction to Agriucltural Engineering: A Problem Solving Approach. Chapman & Hall, 1991.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.