APA (7e ed.) Bronvermelding

Finkle, J. (1998). Viagra heats up war among firms promising cure for impotence. Manila Times.

Chicago (17e ed.) Bronvermelding

Finkle, Jim. "Viagra Heats Up War Among Firms Promising Cure for Impotence." Manila Times 1998.

MLA (9e ed.) Bronvermelding

Finkle, Jim. "Viagra Heats Up War Among Firms Promising Cure for Impotence." Manila Times, 1998.

Let op: Deze citaties zijn niet altijd 100% accuraat.