Kotler, P. (1967). Marketing management (Third Edition.). New Jersey: Prentice-Hall.
Dyfyniad Arddull ChicagoKotler, Philip. Marketing Management. Third Edition. New Jersey: Prentice-Hall, 1967.
Dyfyniad MLAKotler, Philip. Marketing Management. Third Edition. New Jersey: Prentice-Hall, 1967.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.