Mishna Berura Page 284b: Chapter 422;4 to 422;7 The Davening on Rosh Chodesh - part 4 Rabbi AE Glatt
Shmiras Halashon - Shaar Hazechira 12-1 Rabbi MY Edelman
Kitzur Shulchan Aruch Chapter 129;3 - 129;6 The laws of Rosh Hashana Rabbi D Brett
Chovos Halevavos - Gate 6 Humility Part 7 Chapter 4 -to end Rabbi D Brett