O'Sullivan, K., & Barnes, D. F. (2007). Energy policies and multitopic household surveys: Guidelines for questionnaire design in living standards measurement studies. World Bank.
Chicago-Zitierstil (17. Ausg.)O'Sullivan, Kyran, und Douglas F. Barnes. Energy Policies and Multitopic Household Surveys: Guidelines for Questionnaire Design in Living Standards Measurement Studies. Washington, D.C: World Bank, 2007.
MLA-Zitierstil (9. Ausg.)O'Sullivan, Kyran, und Douglas F. Barnes. Energy Policies and Multitopic Household Surveys: Guidelines for Questionnaire Design in Living Standards Measurement Studies. World Bank, 2007.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.