Cita APA (7a ed.)

Keene, C. (1968). Nancy Drew Mystery Stories: Nancy's Mysterious Letter No. 8. Grosset & Dunlap.

Cita Chicago Style (17a ed.)

Keene, Carolyn. Nancy Drew Mystery Stories: Nancy's Mysterious Letter No. 8. New York: Grosset & Dunlap, 1968.

Cita MLA (9a ed.)

Keene, Carolyn. Nancy Drew Mystery Stories: Nancy's Mysterious Letter No. 8. Grosset & Dunlap, 1968.