Dyfyniad APA

Popovics, S. (1979). Concrete-Making. Materials. McGraw-Hill.

Dyfyniad Arddull Chicago

Popovics, Sandor. Concrete-Making. Materials. New York: McGraw-Hill, 1979.

Dyfyniad MLA

Popovics, Sandor. Concrete-Making. Materials. McGraw-Hill, 1979.

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