Παραπομπή σε μορφή APA (7η εκδ.)

Hartley, S. F. (1972). Population quantity vs. quality: A sociological examination of the causes and consequences of the population explosion. Prentice-Hall.

Παραπομπή σε μορφή Chicago (17η εκδ.)

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.

Παραπομπή σε μορφή MLA (8th εκδ.)

Hartley, Shirley Foster. Population Quantity Vs. Quality: A Sociological Examination of the Causes and Consequences of the Population Explosion. Prentice-Hall, 1972.