Dyfyniad APA

Engel, J. F. (1972). Market Segmentation. Holt Rine hart and Winston.

Dyfyniad Arddull Chicago

Engel, James F. Market Segmentation. New york: Holt Rine hart and Winston, 1972.

Dyfyniad MLA

Engel, James F. Market Segmentation. Holt Rine hart and Winston, 1972.

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