These include books, magazines, brochures, handbills, tracts, and audio and video recordings. In the past century, testimony cards, phonographs, sound cars, and radio broadcasts were also used.
ये हैं, किताबें, पत्रिकाएँ, ब्रोशर, हैंडबिल, ट्रैक्ट, ऑडियो और वीडियो कैसेट ।