etc. = and so forth "et cetera"
et al. = and other people "et alii"
i.e. = that is "id est"
e.g. = for example "exempli gratia"
ibid. = in the same place "ibidem"
op. cit. = in the work cited "opere citato"
Latin abbreviations are italicized and use periods as shown. If they are in the middle of a sentence, they have a comma before and after, e.g., this sentence.
