Callaway, H. G. (2014). Arthur S. Eddington: The nature of the physical world : Gifford lectures of 1927 (Annotated edition.). Cambridge Scholars Publishing.
Lua i Stíl Chicago (17ú heag.)Callaway, H. G. Arthur S. Eddington: The Nature of the Physical World : Gifford Lectures of 1927. Annotated edition. Newcastle upon Tyne, England: Cambridge Scholars Publishing, 2014.
Lua MLA (9ú heag.)Callaway, H. G. Arthur S. Eddington: The Nature of the Physical World : Gifford Lectures of 1927. Annotated edition. Cambridge Scholars Publishing, 2014.
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