Answer:

Practitioners do not seem to agree. A federally commissioned report reaffirms marijuana has medicinal value.Dr. Jerome Kassirer has noted, "Federal authorities should rescind their prohibition of the medical use of marijuana for seriously ill patients and allow physicians to decide which patients to treat. The government should change marijuana's status from that of a Schedule I [prohibited] drug ... to that of a Schedule II drug ... and regulate accordingly" (online).

Commentary:

First of all, the quote needs a tag (or if a tag is not desired, the quoted material must be appended to a previous or following sentence). Quoted material can not stand alone as a sentence.

Secondly, all of the information after the dash should be included in the works cited page.All that is needed here is the word online to show that the source was derived online.

Note: If the quoted material had not used a tag like above, the in-text citation should look like this

(Kassirer online)