Ward, D. J. H. (1956). Landmarks of science from Columbus to Spencer: How we got the greatest truths, told in biographical chapters, the places where history turns. [publisher not identified].
Chicago Style (17th ed.) CitationWard, Duren J. H. Landmarks of Science from Columbus to Spencer: How We Got the Greatest Truths, Told in Biographical Chapters, the Places Where History Turns. [Denver?]: [publisher not identified], 1956.
MLA (9th ed.) CitationWard, Duren J. H. Landmarks of Science from Columbus to Spencer: How We Got the Greatest Truths, Told in Biographical Chapters, the Places Where History Turns. [publisher not identified], 1956.
Warning: These citations may not always be 100% accurate.