Dyfyniad APA

Schuller, R. H. (1983). Tough times never last, but tough people do. Thomas Nelson.

Dyfyniad Arddull Chicago

Schuller, Robert H. Tough Times Never Last, but Tough People Do. New York: Thomas Nelson, 1983.

Dyfyniad MLA

Schuller, Robert H. Tough Times Never Last, but Tough People Do. Thomas Nelson, 1983.

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