Ehling, M., & Rendtel, U. (2004). Harmonisation of panel surveys and data quality: Chintex : the change from input harmonisation to ex-post harmonisation in national samples of the European Community houshold panel ; implications on data quality.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Ehling, Manfred, و Ulrich Rendtel. Harmonisation of Panel Surveys and Data Quality: Chintex : The Change from Input Harmonisation to Ex-post Harmonisation in National Samples of the European Community Houshold Panel ; Implications on Data Quality. Wiesbaden, 2004.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Ehling, Manfred, و Ulrich Rendtel. Harmonisation of Panel Surveys and Data Quality: Chintex : The Change from Input Harmonisation to Ex-post Harmonisation in National Samples of the European Community Houshold Panel ; Implications on Data Quality. 2004.