National Science Foundation - office of Special studies. (1958). Research and Development and its Impact on the Economy A Selected Bibliography. National Science Foundation - office of Special studies.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিNational Science Foundation - office of Special studies. Research and Development and Its Impact on the Economy A Selected Bibliography. Washington: National Science Foundation - office of Special studies, 1958.
M.L.A (9 ম সংস্করণ) উদ্ধৃতিNational Science Foundation - office of Special studies. Research and Development and Its Impact on the Economy A Selected Bibliography. National Science Foundation - office of Special studies, 1958.
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