por Averill, Mary [autor] | Corkin, Bud [autor] | Garibay Bellono, Laura D [traductor] | Grepe Philp, Nicolas [editor] | Averill, Mary. Network marketing.
por Chavez Ochoa, Alejandro [autor] | Sierra Longega, Fernando [autor] | Grepe Philp, Nicolas [editor].
por Gelatt, H. B [autor] | Tejera, Héctor G [traductor] | Grepe Philp, Nicolas [editor] | Gelatt, H. B. Creative decision making.