APA (7th ed.) Citation

MacCracken, H. D. (1956). Scientists at work (2nd ed.). L.W. Singer.

Chicago Style (17th ed.) Citation

MacCracken, Helen Dolman. Scientists at Work. 2nd ed. Syracuse: L.W. Singer, 1956.

MLA (9th ed.) Citation

MacCracken, Helen Dolman. Scientists at Work. 2nd ed. L.W. Singer, 1956.

Warning: These citations may not always be 100% accurate.