APA (7th ed.) Citation
Leisinger, K. M., Schmitt, K. M., & Pandya-Lorch, R. (2002). Six billion and counting: Population and food security in the 21st century. International Food Policy Research Institute.
Chicago Style (17th ed.) Citation
Leisinger, Klaus M., Karin M. Schmitt, and Rajul Pandya-Lorch. Six Billion and Counting: Population and Food Security in the 21st Century. International Food Policy Research Institute, 2002.
MLA (9th ed.) Citation
Leisinger, Klaus M., et al. Six Billion and Counting: Population and Food Security in the 21st Century. International Food Policy Research Institute, 2002.
Warning: These citations may not always be 100% accurate.