Surkyn, J., Deboosere, P., Bavel, J. V., Willekens, F., & Koloriet, S. (2008). Demographic challenges for the 21st century: A state of the art in demography : conference organized as a tribute to the continuing endeavours of Prof. Dr. Em. Ron Lesthaeghe in the field of demography. VUBPress.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSurkyn, J., Patrick Deboosere, Jan Van Bavel, Frans Willekens, और Sterrebeek Koloriet. Demographic Challenges for the 21st Century: A State of the Art in Demography : Conference Organized as a Tribute to the Continuing Endeavours of Prof. Dr. Em. Ron Lesthaeghe in the Field of Demography. Brussels, Belgium: VUBPress, 2008.
एमएलए (9वां संस्करण) प्रशस्ति पत्रSurkyn, J., et al. Demographic Challenges for the 21st Century: A State of the Art in Demography : Conference Organized as a Tribute to the Continuing Endeavours of Prof. Dr. Em. Ron Lesthaeghe in the Field of Demography. VUBPress, 2008.