Dyfyniad APA

GRONROOS CHRISTIAN. (1990). SERVICE MANAGEMENT AND MARKETING. LEXINGTON BOOKS.

Dyfyniad Arddull Chicago

GRONROOS CHRISTIAN. SERVICE MANAGEMENT AND MARKETING. MASSACHUSETTS: LEXINGTON BOOKS, 1990.

Dyfyniad MLA

GRONROOS CHRISTIAN. SERVICE MANAGEMENT AND MARKETING. LEXINGTON BOOKS, 1990.

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