Canada official postal guide ...
comprising the chief regulations of the Post office, rates of postage and other information, together with an alphabetical list of post offices in Canada.
Revised and published annually ... by authority of the postmaster general.
APA Citation
Canada. Post Office Dept. Canada official postal guide ..: comprising the chief regulations of the Post office, rates of postage and other information, together with an alphabetical list of post offices in Canada. Ottawa [etc.].
MLA Citation
Canada. Post Office Dept. Canada Official Postal Guide ..: Comprising the Chief Regulations of the Post Office, Rates of Postage And Other Information, Together With an Alphabetical List of Post Offices In Canada. Ottawa [etc.],
Warning: These citations may not always be complete (especially for serials).