Kramer, W., Schirmer, U., Jeschke, P., & Witschel, M. (2012). Modern crop protection compounds (2nd rev. and enlarg. ed.). Wiley-VCH.
Lua i Stíl Chicago (17ú heag.)Kramer, Wolfgang, U. Schirmer, P. Jeschke, agus M. Witschel. Modern Crop Protection Compounds. 2nd rev. and enlarg. ed. Weinheim: Wiley-VCH, 2012.
Lua MLA (9ú heag.)Kramer, Wolfgang, et al. Modern Crop Protection Compounds. 2nd rev. and enlarg. ed. Wiley-VCH, 2012.
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