Gaya APA

Pathan, H., Williams, J. (2012). Basic opioid pharmacology: an update ((2012), 6(1)). : sagepub.com/journalsPermissions.nav.

Gaya MLA

Pathan, Hasan., Williams, John. "Basic opioid pharmacology: an update". (2012), 6(1) : sagepub.com/journalsPermissions.nav, 2012. e-journal.