The Standard Book of Spells: Grade 1
The Standard Book of Spells is a collection of books written by Miranda Goshawk for a variety of subjects at Hogwarts School of Witchcraft and Wizardry. The series includes seven books, apparently for each year at Hogwarts, covering the spells students are taught. They are used by Professor Filius Flitwick in Charms, and by Professor Severus Snape in Defence Against the Dark Arts during the 1996–1997 school year. The Standard Book, or at least the second Volume, costs one sickle at the Flourish and Blotts bookstore.
The Knockback Jinx is found in Chapter 1 of The Standard Book of Spells, Grade 1.
Alohomora is a spell found in Chapter 7 of The Standard Book of Spells, Grade 1.