Comfort, M. H. (1967). Danger on the trail: (Original title: Prairie schooners west). Scholastic Book Services.
Čikaški stil citiranja (17. izdanje)Comfort, Mildred Houghton. Danger on the Trail: (Original Title: Prairie Schooners West). New York: Scholastic Book Services, 1967.
MLA način citiranja (9. izdanje)Comfort, Mildred Houghton. Danger on the Trail: (Original Title: Prairie Schooners West). Scholastic Book Services, 1967.
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