APA aipamena

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

Chicago Style aipamena

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

MLA aipamena

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

Kontuz: berrikusi erreferentzia hauek erabili aurretik.