A bibliography is necessary whenever you use ideas that you have learned from other writers or speakers. You will use another person's ideas in just about every philosophy paper you write. Consult a style guide if necessary. Otherwise, simply footnote the sentence containing the paraphrase or idea found in a source. You may use any standard referencing system of footnotes, endnotes, or parenthetical reference.
Papers are due in class on the due date.
Papers will be down-graded if they are turned in later than that, unless you have a medical excuse. Any other special pleading must be made in advance. Plan ahead, and back up your disks frequently. Let me know by the due date when you expect to have it in. Plagiarism and Academic Integrity.