See Mark 16:9: cf. Luke 8:2; Mark 16:9–11: cf. John 20:11–18, Luke 24:10–11; Mark 16:12–13: cf. Luke 24:13–35; Mark 16:14–16: cf. Matthew 28:16–20, Luke 24:36–38; Mark 16:17–18: cf. Luke 10:17–20; Mark 16:19: cf. Luke 24:50–53.
As James A. Kelhoffer has recently demonstrated, “The numerous allusions to Matthew, Luke and John—especially to the ends of these writings—demonstrate…that the author of Mark 16:9–20 wrote in conscious dependence on one or more MSS [manuscripts] of the NT [New Testament] Gospels” (Kelhoffer, Miracle and Mission: The Authentication of Missionaries and Their Message in the Longer Ending of Mark [Tübingen: Mohr Siebeck, 2000], p. 150). In this regard, it should also be noticed that whereas Matthew and Luke, in passages where they parallel Mark 1:1–16:8, consistently abridge Mark, it is the other way around in 16:9–20: The long form of Mark offers an abridgement of material from the other gospels.