A manual for writers of research papers, theses, and dissertations, 7th edition - Kate L. Turabian 2007

Issue information
Parenthetical citations–reference list style: citing specific types of sources
Part II. Source Citation

In addition to a date of publication, most reference list entries include volume number and issue number. Readers may not need all of these elements to locate an article, but including them all guards against a possible error in one of them.

The volume number follows the journal title without intervening punctuation and is not italicized. Use arabic numerals even if the journal itself uses roman numerals. If there is an issue number, it follows the volume number, separated by a comma and preceded by no. If you have any additional date information beyond the year of publication (see 19.2.2), include it in parentheses after the volume and issue number. For such information, follow the practice of the journal; it may include a season, a month, or an exact day. Capitalize seasons in journal citations, even though they are not capitalized in text.

R: Mackay, Christopher S. 1999. Lactantius and the succession to Diocletian. Classical Philology 94, no. 2:198—209.

Kumar, Rahul. 2003. Reasonable reasons in contractualist moral argument. Ethics 114 (October): 6—37.

When a journal uses issue numbers only, without volume numbers, a comma follows the journal title.

R: Beattie, J. M. 1974. The pattern of crime in England, 1660—1800. Past and Present, no. 62:47—95.