Dyfyniad APA

DENTON KEITH. (1990). HOW TO GIVE QUALITY SERVICE. UNIVERSAL BOOK.

Dyfyniad Arddull Chicago

DENTON KEITH. HOW TO GIVE QUALITY SERVICE. UNIVERSAL BOOK, 1990.

Dyfyniad MLA

DENTON KEITH. HOW TO GIVE QUALITY SERVICE. UNIVERSAL BOOK, 1990.

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