BasicMath Drills Mastering Essential MathSkills: 30 Minutes a Day to Success, Book 2: Middle Grades/HighSchool by Peky Daily Paperback, 40 Pages, Published 2018 by Createspace Independent Publishing Platform Large Print ISBN-13: 978-1-72235-065-9, ISBN: 1-72235-065-2
HighSchoolMath BasicSkills by Fabian Lacret-Subirat Paperback, 236 Pages, Published 1997 by Lacret Pub Co ISBN-13: 978-0-943144-36-8, ISBN: 0-943144-36-1