Παραπομπή σε μορφή APA (7η εκδ.)

Harris, C. C., & Hopkins, F. E. (1972). Locational analysis: An interregional econometric model of agriculture, mining, manufacturing, and services,. Lexington Books.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Harris, Curtis C., και Frank E. Hopkins. Locational Analysis: An Interregional Econometric Model of Agriculture, Mining, Manufacturing, and Services,. [Lexington, Mass.,: Lexington Books, 1972.

Παραπομπή σε μορφή MLA (8th εκδ.)

Harris, Curtis C., και Frank E. Hopkins. Locational Analysis: An Interregional Econometric Model of Agriculture, Mining, Manufacturing, and Services,. Lexington Books, 1972.