Keene, C. (1930). Nancy Drew Mystery Stories: The Hidden Staircase No. 2. Grosset & Dunlap.
Chicago Style (17th ed.) CitationKeene, Carolyn. Nancy Drew Mystery Stories: The Hidden Staircase No. 2. New York: Grosset & Dunlap, 1930.
MLA (9th ed.) CitationKeene, Carolyn. Nancy Drew Mystery Stories: The Hidden Staircase No. 2. Grosset & Dunlap, 1930.
Warning: These citations may not always be 100% accurate.