Παραπομπή APA

Hayes, R. M., & Shoffner, R. M. (1964). The economics of book catalog production. [s.l.]: Sherman Oaks Cal., Advanced Information Systems Division.

Παραπομπή Chicago Style

Hayes, R. M., and R. M. Shoffner. The Economics of Book Catalog Production. [s.l.]: Sherman Oaks Cal., Advanced Information Systems Division, 1964.

Παραπομπή MLA

Hayes, R. M., and R. M. Shoffner. The Economics of Book Catalog Production. [s.l.]: Sherman Oaks Cal., Advanced Information Systems Division, 1964.

Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.