Hawkins, R. R. (1950). Scientific, medical, and technical books published in the United States of America, 1945-48: A selected list of titles in print, with annotations. Supplement.
芝加哥风格引文Hawkins, Reginald Robert. Scientific, Medical, and Technical Books Published in the United States of America, 1945-48: A Selected List of Titles in Print, with Annotations. Supplement. Washington, D.C, 1950.
MLA引文Hawkins, Reginald Robert. Scientific, Medical, and Technical Books Published in the United States of America, 1945-48: A Selected List of Titles in Print, with Annotations. Supplement. 1950.
警告：这些引文格式不一定是100％准确.