Spengler, J. J. (1978). Facing Zero Population Growth: Reactions and interpretations, past and present. Duke University Press.
Chicago-Zitierstil (17. Ausg.)Spengler, Joseph J. Facing Zero Population Growth: Reactions and Interpretations, Past and Present. Duke University Press, 1978.
MLA-Zitierstil (9. Ausg.)Spengler, Joseph J. Facing Zero Population Growth: Reactions and Interpretations, Past and Present. Duke University Press, 1978.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.