For the record here’s the information. The textbook we should imagine is now somewhat out of date – they may well be updating it digitally but to be honest who knows?
Colorado Marijuana Laws and Regulations (2014)
Author: Publisher’s Editorial Staff
Year: 2014 Format: Paperback 536 pages
ISBN 13: 9781630449957 (978-1-63044-995-7)
ISBN: 1630449954 (1-63044-995-4)
More information here