Weldon, J., & Levitt, Z. (1977). Is there life after death. Harvest House.
芝加哥风格引文Weldon, John, 与 Zola Levitt. Is There Life After Death. California: Harvest House, 1977.
MLA引文Weldon, John, 与 Zola Levitt. Is There Life After Death. Harvest House, 1977.
警告：这些引文格式不一定是100％准确.