Keene, C. (1968). Nancy Drew Mystery Stories: Nancy's Mysterious Letter No. 8. Grosset & Dunlap.
芝加哥风格引文Keene, Carolyn. Nancy Drew Mystery Stories: Nancy's Mysterious Letter No. 8. New York: Grosset & Dunlap, 1968.
MLA引文Keene, Carolyn. Nancy Drew Mystery Stories: Nancy's Mysterious Letter No. 8. Grosset & Dunlap, 1968.
警告：这些引文格式不一定是100％准确.