You have two choices to access this free textbook from the Open Educational Resources Initiative (OERI):
1- You can read it on the web Interpersonal Communication: Context and Connection (link)
2- You can download the textbook as a pdf from the link.
In Lak’Ech is a timeless Mayan precept that Luis Valdez, who is regarded as the father of Chicano theater, incorporated into a larger poem called “Pensamiento Serpentino.” I’ve always been moved by the first line, which translates: “You are my other me.” Source: https://www.teacher2teacher.education