Comma Goes Inside
When the context calls for a comma at the end of material enclosed in quotation marks, the comma should be placed inside the quotation marks:
We should study the report on "discrimination in the workplace," which was written by the personnel office.
Strunk & White gives this example:
"The Fish," "Poetry," and "The Monkeys" are in Marianne Moore's Selected Poems. Strunk & White, p. 36.