Purity resource book, [s.d.]

[description english/roman)] Purity resource book, a supplement to the Purity guide, with an introduction by Thelma E Cotton, Church of God in Christ, [s.d.].【英文/罗马音描述】《圣洁资源手册》为《圣洁指南》的增补本，由基督神教会的塞尔玛·E·科顿（Thelma E Cotton）撰写引言，未标注出版年份。