Platt, N., & Drummond, M. J. (1960). Our world through the ages: Key to workbook. Prentice-Hall, Inc..
Chicago Style (17th ed.) CitationPlatt, Nathaniel, i Muriel Jean Drummond. Our World Through the Ages: Key to Workbook. Englewood Cliffs, N.J.: Prentice-Hall, Inc., 1960.
Cita MLAPlatt, Nathaniel, i Muriel Jean Drummond. Our World Through the Ages: Key to Workbook. Prentice-Hall, Inc., 1960.
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