Close the dealSamuel D Deep, Sam Deep, Lyle Sussman, Sandler Sales Institute · First published 1998Open the Tome
Leader si diventa. Avventure di un manager alla scoperta della leadershipLyle Sussman, Sam Deep, Alex Stiber · First published 2004Open the Tome
Yes, You Can! 1,200 Inspiring Ideas For Work, Home, And HappinessSam; Sussman, Lyle Deep · First published 2004Open the Tome
Strong Words:What To Say To Get What You WantSam Deep; Lyle Sussman · First published 1992Open the Tome
