Hawkins, R. R. (1958). Scientific, medical and technical books: A selected list of titles in print, with annotations (2nd ed.). Washington: National Academy of Sciences.
Παραπομπή Chicago StyleHawkins, R. R. Scientific, Medical and Technical Books: A Selected List of Titles in Print, With Annotations. 2nd ed. Washington: National Academy of Sciences, 1958.
Παραπομπή MLAHawkins, R. R. Scientific, Medical and Technical Books: A Selected List of Titles in Print, With Annotations. 2nd ed. Washington: National Academy of Sciences, 1958.
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