Dyfyniad APA

BUTLER, R. B. (1994). Architectural and engineering calculations manual. McGraw Hill.

Dyfyniad Arddull Chicago

BUTLER, Robert Brown. Architectural and Engineering Calculations Manual. New York: McGraw Hill, 1994.

Dyfyniad MLA

BUTLER, Robert Brown. Architectural and Engineering Calculations Manual. McGraw Hill, 1994.

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