Which prepositions should I use in the following sentence:

The final exam in (or) on a course of (or) by Dr.XYZ.

In Dictionary.com the preposition of is said to mean

2. (used to indicate derivation, origin, or source):
a man of good family; the plays of Shakespeare; a piece of cake.

Whereas by denotes authorship, or the work of someone

11. through the agency, efficacy, work, participation, or authority of:
The book was published by Random House.

  • @Jolenealaska why would from be needed? The OP didn't miss "by" it was always included in the original question.
    – Mari-Lou A
    Feb 15, 2016 at 11:14
  • Twas a lame joke. Feb 15, 2016 at 22:08
  • 1
    For what it's worth, the most natural words that come to me are a final exam for a course with Dr. XYZ.
    – choster
    Feb 16, 2016 at 16:44

1 Answer 1


An exam may be on or over a topic, but it occurs in a class.

The course taught by Dr X is neither the course of Dr X nor the course by Dr X but Dr X's course.

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