APA (7 ম সংস্করণ) উদ্ধৃতি

Cohen, W. M., Nelson, R. R., & Walsh, J. P. (2000). Protecting their intellectual assets: Appropriability conditions and why U.S. manufacturing firms patent(or not). National Bureau of Economic Research.

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

Cohen, Wesley M., Richard R. Nelson, এবং John P. Walsh. Protecting Their Intellectual Assets: Appropriability Conditions and Why U.S. Manufacturing Firms Patent(or Not). Cambridge: National Bureau of Economic Research, 2000.

M.L.A (9 ম সংস্করণ) উদ্ধৃতি

Cohen, Wesley M., et al. Protecting Their Intellectual Assets: Appropriability Conditions and Why U.S. Manufacturing Firms Patent(or Not). National Bureau of Economic Research, 2000.