A comma is required after a prepositional phrase. After the war, the enemy vanished. In 1941, the decision was final. A comma is necessary after city and state and after a full date. Article titles are always set in quotes.
Second references use the last name only.
You will be assessed a 10 percent penalty and will be given one week to redo the paper. After one week usual penalties for missed deadlines will apply. If you have questions about these or other writing questions, please see me or the Harbrace College Handbook .