Groenendijk, H. (1970). Problems in qualitative gaschromatographic analysis of steroids on open-hole capillary columns. Philips Research Laboratories.
Chicago-viite (17. p.)Groenendijk, H. Problems in Qualitative Gaschromatographic Analysis of Steroids on Open-hole Capillary Columns. [Eindhoven, Netherlands: Philips Research Laboratories, 1970.
MLA-viite (8. p.)Groenendijk, H. Problems in Qualitative Gaschromatographic Analysis of Steroids on Open-hole Capillary Columns. Philips Research Laboratories, 1970.
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