The source you are citing using the MLA style may have a volume or issue number or both. This is especially likely for journal articles.
- Abbreviate volume to “vol.” and issue number to “no.”
- For other types of numbers such as television episodes or government reports, write out the whole word (e.g. season 3, episode 6; report 52-315).
- Follow the number with a comma.
Marchetti-Mercer, Maria C. “Those Easily Forgotten: The Impact of Emigration on those Left Behind.” Family Process, vol. 52, no. 3, Sept. 2012, pp.376-390.
Kunz, Jean Lock. Being Young and Visible: Labour Market Access among Immigrant and Visible Minority Youth: Final Report. Working paper SP-581-08-03E, Human Resources Development Canada, Applied Research Branch, 2003.