Canada. Department of Communications. (1971). Service postal et telecommunications. Information Canada.
Cita Chicago (17th ed.)Canada. Department of Communications. Service Postal Et Telecommunications. Ottawa: Information Canada, 1971.
Cita MLA (8th ed.)Canada. Department of Communications. Service Postal Et Telecommunications. Information Canada, 1971.
Atenció: Aquestes cites poden no estar 100% correctes.