Pollack, P. (1960). Careers and opportunities in science: A survey of all fields (Rev. and brought up to date by John Purcell.). E. P. Dutton.
Lua i Stíl Chicago (17ú heag.)Pollack, Philip. Careers and Opportunities in Science: A Survey of All Fields. Rev. and brought up to date by John Purcell. New York: E. P. Dutton, 1960.
Lua MLA (9ú heag.)Pollack, Philip. Careers and Opportunities in Science: A Survey of All Fields. Rev. and brought up to date by John Purcell. E. P. Dutton, 1960.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.