Students of the World Christian Foundations program must purchase two sets of books. The first set is the study materials, or the “Core Curriculum” books, which are produced by the Institute of International Studies. These “Core Curriculum” books are to be purchased by following the instructions below. The other set of books are “Textbooks” available in the general marketplace and are used for assigned readings in each lesson. You may obtain these textbooks however you wish. Also,these textbooks are made available to our students at a special website (See MBS Direct information given below).