Should the title of a short story have a comma after it if it is the subject of a sentence?

A friend of mine was asking me this question. She used the following sentence in her essay for her English class:

"Harrison Bergeron" is a laughable read.

However, her English professor marked this as wrong, stating that it should be the following:

"Harrison Bergeron," is a laughable read.

The subject of the sentence is obviously the short story "Harrison Bergeron," which must be in quotation marks. The rule that I understand is that after a quotation, suppose it is anywhere but the end of a sentence, there must be a comma before the closing quotation mark. But, what about a short story/poem title?

As my friend began to write a paper summarizing two plays, she wrote the names of the plays in the following way:

Unlike The Taming of the Shrew, the protagonist in A Doll House, does not have a husband that wishes to gain his wife's love and respect.

I can understand the usage of the comma after the first play, as it is the end of a dependant clause. However, she put the comma after A Doll House for the purpose of not having her professor mark this as wrong. This is not in quotations, but if the rule for commas applies for short stories, does it carry over into this context?

Answer

I believe the professor is confusing dialogue with a citation. In prose, the correct form would be something like:

"I am answering a question" said Ian Atkin.

The AP Manual doesn't implicitly have a response, but in explaining the rules, uses the following:

Jean-Luc Godard’s film “Masculin Feminin” would be cited as “Masculine
Feminine.”