APA (7 वां संस्करण) प्रशस्ति पत्र
Heisig, J. P. (2015). Late-career Risks in Changing Welfare States: Comparing Germany and the United States since the 1980s. Amsterdam University Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
Heisig, Jan Paul. Late-career Risks in Changing Welfare States: Comparing Germany and the United States Since the 1980s. Amsterdam: Amsterdam University Press, 2015.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
Heisig, Jan Paul. Late-career Risks in Changing Welfare States: Comparing Germany and the United States Since the 1980s. Amsterdam University Press, 2015.
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