Dyfyniad APA

DELENS A H R. (1973). PRINCIPLES OF MARKET RESEARCH. CROSBY LOCKWOOD.

Dyfyniad Arddull Chicago

DELENS A H R. PRINCIPLES OF MARKET RESEARCH. LONDON: CROSBY LOCKWOOD, 1973.

Dyfyniad MLA

DELENS A H R. PRINCIPLES OF MARKET RESEARCH. CROSBY LOCKWOOD, 1973.

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