Kammeyer, K. C. W. (1975). Population studies: Selected essays and research (2nd ed.). Rand McNally College Pub. Co..
Lua i Stíl Chicago (17ú heag.)Kammeyer, Kenneth C. W. Population Studies: Selected Essays and Research. 2nd ed. Chicago: Rand McNally College Pub. Co., 1975.
Lua MLA (9ú heag.)Kammeyer, Kenneth C. W. Population Studies: Selected Essays and Research. 2nd ed. Rand McNally College Pub. Co., 1975.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.