1. Otto Kleppner's advertising procedure
:RUSSELL, Thomas - VERRILL, Glenn. Otto Kleppner's advertising procedure. 9. ed. Englewood Cliffs : Prentice-Hall, 1986. 665 s. The Prentice-Hall series in marketing. ISBN 0-13-643255-7. [Copy count : 1, currently available 1, at library only 0]