Não informado. (1915). Annals of the Dearborn Observatory of the Northwestern University. Dearborn Observatory of the Northwestern University.
Čikaški stil citiranja (17. izdanje)Não informado. Annals of the Dearborn Observatory of the Northwestern University. Evanston, Ill: Dearborn Observatory of the Northwestern University, 1915.
MLA način citiranja (8. izdanje)Não informado. Annals of the Dearborn Observatory of the Northwestern University. Dearborn Observatory of the Northwestern University, 1915.
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