Sparks, C. (1942). Newer types of vacation church sch. programs. Presbyterian College of Christian Education.
Chicago-viite (17. p.)Sparks, Catherine. Newer Types of Vacation Church Sch. Programs. Chicago: Presbyterian College of Christian Education, 1942.
MLA-viite (8. p.)Sparks, Catherine. Newer Types of Vacation Church Sch. Programs. Presbyterian College of Christian Education, 1942.
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