Road Research Board Conference. Continuing education in transport. AAEE Conference on Engineering Education, Melbourne, Aust. 1990. Note that there are two articles by Young, which are ordered based on the name of the second author, and by date published if this is not applicable. If they don't specify one pick the one you feel confident with.
Abbreviations anon anonymous Used in some styles when the author is unknown c., ca.
Used for approximate dates e.g. ca. The page number can be different. Used when the citation comes from the same source as one cited previously. The author's name should be attached to indicate the source e.g. Menzies, op. cit.