Curtis, G. T. (1887). Creation or evolution?: A philosophical inquiry. D. Appleton and Company.
Lua i Stíl Chicago (17ú heag.)Curtis, George Ticknor. Creation or Evolution?: A Philosophical Inquiry. New York: D. Appleton and Company, 1887.
Lua MLA (8ú heag.)Curtis, George Ticknor. Creation or Evolution?: A Philosophical Inquiry. D. Appleton and Company, 1887.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.