Dyfyniad APA

CROSBY PHILIP B. (1980). QUALITY IS FREE THE ART OF MAKING QUALITY CERTAIN. MENTOR BOOKS.

Dyfyniad Arddull Chicago

CROSBY PHILIP B. QUALITY IS FREE THE ART OF MAKING QUALITY CERTAIN. NEW YORK: MENTOR BOOKS, 1980.

Dyfyniad MLA

CROSBY PHILIP B. QUALITY IS FREE THE ART OF MAKING QUALITY CERTAIN. MENTOR BOOKS, 1980.

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