Microbiology guidelinesAnita S. Curry, Joyce G. Graf, Gerald N. McEwen · First published 2001Open the Tome
International cosmetic ingredient dictionary and handbookJohn A. Wenninger, Gerald N. McEwen · First published 1998Open the Tome
International cosmetic ingredient dictionaryJohn A. Wenninger, Gerald N. McEwen · First published 1995Open the Tome
International cosmetic ingredient handbookJohn A. Wenninger, Gerald N. McEwen · First published 1995Open the Tome
Ctfa International Cosmetic Ingredient Dictionary (Vol.1)Ctfa Staff, John A. Wenninger, Gerald N. McEwen · First published 1993Open the Tome
CTFA cosmetic ingredient handbookJohn A. Wenninger, Gerald N. McEwen · First published 1992Open the Tome
CTFA compendium of cosmetic ingredient compositionGerald N. McEwen · First published 1990Open the Tome