As mentioned, the Sunday readings in your book are for year B of the Revised Common Lectionary. 
The best place to find all of these years & readings listed are CRI / The Voice website

The Church Year begins with Advent in November/December.
Here is a quick look at the breakdown of years from the Revised Common Lectionary.
Click on the year below to take you to the Sunday readings you are looking for.
Year A:   2016-2017, 2019-2020
Year B:  2017-2018; 2020-2021
Year C:   2015-2016; 2018-2019

For more Sunday resources refer to the week #1 Sunday post.