Butler, S. T. (1965). Time: Selected lectures on time and relativity, the arrow of time and the relation of geological and biological time on men of science. Pergamon.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিButler, Stuart Thomas. Time: Selected Lectures on Time and Relativity, the Arrow of Time and the Relation of Geological and Biological Time on Men of Science. Oxford: Pergamon, 1965.
M.L.A (9 ম সংস্করণ) উদ্ধৃতিButler, Stuart Thomas. Time: Selected Lectures on Time and Relativity, the Arrow of Time and the Relation of Geological and Biological Time on Men of Science. Pergamon, 1965.
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