Duller, H. J. (1982). Development technology. Routledge & K. Paul.
Lua i Stíl Chicago (17ú heag.)Duller, H. J. Development Technology. London ; Boston: Routledge & K. Paul, 1982.
Lua MLA (9ú heag.)Duller, H. J. Development Technology. Routledge & K. Paul, 1982.
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