APA-referens (7:e uppl.)
Hartley, S. F. (1972). Population quantity vs. quality: A sociological examination of the causes and consequences of the population explosion. Prentice-Hall.
Chicago-referens (17:e uppl.)
Hartley, Shirley Foster. Population Quantity Vs. Quality: A Sociological Examination of the Causes and Consequences of the Population Explosion. Englewood Cliffs, N.J.: Prentice-Hall, 1972.
MLA-referens (9:e uppl.)
Hartley, Shirley Foster. Population Quantity Vs. Quality: A Sociological Examination of the Causes and Consequences of the Population Explosion. Prentice-Hall, 1972.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.