Brochure, pamphlet or leaflet

(refer Snooks, p. 196-7, 201)
If date is uncertain place a ? after the date.  If the date is unknown use the abbreviation n.d. in place of a date.  Also provide a descripton of the document type in normal typeface after the title, e.g. pamphlet.

In-Text:                     (Abbott Diabetes Care 2009?)

References:            Abbott Diabetes Care 2009?, What is diabetes?, pamphlet, Abbott Diabetes Care, Doncaster, Vic.

If you cannot find an example for what you are looking for then use: Chapter 12 'Methods of citations' from Snooks (2002)