Ratkowsky, D. A. (1992). Cross-over experiments: Design analysis and application. Marcel Dekker.
Lua i Stíl Chicago (17ú heag.)Ratkowsky, David A. Cross-over Experiments: Design Analysis and Application. New York: Marcel Dekker, 1992.
Lua MLA (9ú heag.)Ratkowsky, David A. Cross-over Experiments: Design Analysis and Application. Marcel Dekker, 1992.
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