De-Escalate: How to Calm an Angry Person in 90 Seconds or LessBuku AudioDe-Escalate: How to Calm an Angry Person in 90 Seconds or LesskaryaDouglas E. NollPenilaian: 5 dari 5 bintang5/5Simpan De-Escalate: How to Calm an Angry Person in 90 Seconds or Less untuk nanti