
References
^ New, Engaging Titles from 4LTR Press: Relg : World by Robert E. Van Voorst (2014, Paperback / Mixed Media) ISBN 9781285434681 (revised Jan 2026)^ Van Voorst, Robert E. (2014). RELG World (with CourseMate Printed Access Card), WADSWORTH PUB CO INC. BiggerBooks. ISBN 9781285434681 (revised Nov 2023)
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