Von Braun, J., & Puetz, D. (1993). Data needs for food policy in developing countries: New directions for household surveys. International Food Policy Research Institute.
Cytowanie według stylu Chicago (wyd. 17)Von Braun, Joachim, i Detlev Puetz. Data Needs for Food Policy in Developing Countries: New Directions for Household Surveys. .Washington, D.C: International Food Policy Research Institute, 1993.
Cytowanie według stylu MLA (wyd. 9)Von Braun, Joachim, i Detlev Puetz. Data Needs for Food Policy in Developing Countries: New Directions for Household Surveys. International Food Policy Research Institute, 1993.