Vergara, R. B. (2001). On-line grocery shopping vs traditional supermarketing. Manila Times.
Dyfyniad Arddull ChicagoVergara, Ricky B. "On-line Grocery Shopping Vs Traditional Supermarketing." Manila Times 2001.
Dyfyniad MLAVergara, Ricky B. "On-line Grocery Shopping Vs Traditional Supermarketing." Manila Times, 2001.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.