Παραπομπή APA

Schreiber, A. F., Gatons, P. K., & Clemmer, R. B. (1971). Economics of urban problems: :an introduction. Houghton.

Παραπομπή Chicago Style

Schreiber, Arthur F., Paul K. Gatons, και Richard B. Clemmer. Economics of Urban Problems: :an Introduction. Boston: Houghton, 1971.

Παραπομπή MLA

Schreiber, Arthur F., et al. Economics of Urban Problems: :an Introduction. Houghton, 1971.