Παραπομπή APA

Brown, J. D. (1961). Manual of library economy rev by R Northwood Lock (7th ed.).

Παραπομπή Chicago Style

Brown, James Duff. Manual of Library Economy Rev by R Northwood Lock. 7th ed. 1961.

Παραπομπή MLA

Brown, James Duff. Manual of Library Economy Rev by R Northwood Lock. 7th ed. 1961.