Standard references for parliamentary affairs

Besides the Standing Order, the other reference for the procedures and conducts of parliamentary affairs to which some of us referred was the legendary Sir T. Erskine May's Parliamentary Practice which, inter alia, codifies many parliamentary norms as well as conventions of Britain. I still keep a copy of its 1139-page Sixteen Edition (1957) but I understand that newer and more updated editions are available. Sir T. Erskine May's Parliamentary Practice is not binding but it does serve as an excellent reference to understand some rules, procedures and practices like the motion to deduct the allowance of a minister by RM10, and also provide a normative framework of civilised conducts.