Can you assist me in using citations in this document

The importation of drugs from Canada has become quite controversial. The price of the same medicine imported from Canada and the same medicine sold through the US distribution chain can sometimes be three to four times higher. While presumed safe, the Canadian medication does not have all of the hoops to jump through to bring it to market, thereby lowering cost. In the United States, we are faced with many regulations that carry lots of add-on fees by the manufacturer and then allowing the PBM's to tack on even more cost. I support one of President Trump's three executive orders forcing PBM reform as they are the middleman that the other countries do not have, allowing a cheaper cost for the consumers.

McGrail, Samantha. "Trump Aims to Lower Drug Prices Via PBM Reform, Drug Importation."

Shepherd, Marv. "U.S. Drug Importation: Impact on Canada's Prescription Drug Supply." Health Economics & Outcome Research: Open Access, vol. 04, no. 01, 2018, doi:10.4172/2471-268x.1000146.