APA (7th ed.) Citation

McGraw-Hill & Gray, P. A. (1991). Open systems: хa иbusiness strategy for the 1990s. McGraw-Hill.

Chicago Style (17th ed.) Citation

McGraw-Hill and Pamela A. Gray. Open Systems: хa иbusiness Strategy for the 1990s. London: McGraw-Hill, 1991.

MLA (8th ed.) Citation

McGraw-Hill and Pamela A. Gray. Open Systems: хa иbusiness Strategy for the 1990s. McGraw-Hill, 1991.