Prealgebra 2e by Lynn Marecek and others / 3.1 Introduction to Integers (2020)

Online text: openstax.org/books/prealgebra-2e/pages/3-1-introduction-to-integers

Section of Prealgebra 2e, whose senior contributing authors are credited in the book preface. The whole-book citation identifies publication on 11 March 2020; website footer copyright is a different date.

Cited passages: Prealgebra 2e, §3.1: Locate Positive and Negative Numbers on the Number Line; Opposite Notation; Integers.