APA استشهاد

(1971). American men and women of science: Physical and biogical sciences- A biographical directory (12th.). R.R. Bowker.

استشهاد بنمط شيكاغو

American Men and Women of Science: Physical and Biogical Sciences- A Biographical Directory. 12th. New York: R.R. Bowker, 1971.

MLA استشهاد

American Men and Women of Science: Physical and Biogical Sciences- A Biographical Directory. 12th. R.R. Bowker, 1971.