Higgie, J. (1999). Natural selection: Jennifer Higgie on Tim Gardner. frieze.
Lua i Stíl Chicago (17ú heag.)Higgie, Jennifer. "Natural Selection: Jennifer Higgie on Tim Gardner." Frieze 1999.
Lua MLA (8ú heag.)Higgie, Jennifer. "Natural Selection: Jennifer Higgie on Tim Gardner." Frieze, 1999.
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