Ussher, R. (1897). Neo-Malthusianism: An enquiry into that system with regard to its economy and morality.
Chicago-Zitierstil (17. Ausg.)Ussher, Richard. Neo-Malthusianism: An Enquiry into That System with Regard to Its Economy and Morality. London, 1897.
MLA-Zitierstil (9. Ausg.)Ussher, Richard. Neo-Malthusianism: An Enquiry into That System with Regard to Its Economy and Morality. 1897.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.