Cases on Westlaw Next Canada and CanLII include parallel citations, so it is an easy way to find if your case is in an official law report series, or other report, for the purpose of citing the case appropriately.
For example:
Saskatchewan Federation of Labour v Saskatchewan is a Canadian Supreme Court case that has the following parallel citations: 2015 SCC 4; 2015 CSC 4; [2015] 1 SCR 245; [2015] 3 WWR 1; [2015] SCJ No 4; 2015 CLLC 220-014; 248 LAC (4th) 271; 249 ACWS (3d) 324; 328 CRR (2d) 1; 380 DLR (4th) 577; 451 Sask R 1; 467 NR 3; 628 WAC 1; JE 2015-186; DTE 2015T-88; and 2015 CarswellSask 32.
This decision has been published in the authorised Supreme Court Reports (SCR), and this is the version you should find and cite.
For AGLC citation purposes, the preferred versions to cite are, in priority order: