The following constructions do not require commas:
- Months. Do not use a comma when referring to a month within a particular year.
Example: I conducted the study in June 2003.
- Complex sentences. Do not use a comma in a sentence that joins an independent clause and a dependent clause.
Example: Smith (2001) found that the results were consistent although some details in the approaches differed.
- Introducing quotations (seamless). Do not use a comma when an independent clause seamlessly introduces a quotation.
Example: Freud (1900) claimed that “the dreamer…assumes that the dream–even if it does not come from another world–has at all events transported the dreamer into another world” (p. 5).
- Comma splices. A comma splice occurs when two independent clauses (complete sentences) are separated by just a comma. Nursing Essay Writing Punctuation: Commas
Example: Jessica and I went to the movies, we had a good time.
There are many ways to correct the sentence above. Review the information on run-on sentences for examples of correctly joining independent clauses. Nursing Essay Writing Punctuation: Commas