Wall, Bob ; Solum, Robert S.; Sobol, Mark (Mark Robert) . (1992). The visionary leader : from mission statement to a thriving organization, here's your blueprint for building an inspired, cohesive customer-oriented team. Rocklin, CA : Prima Publ.

Wall, Bob; Solum, Robert S.; Sobol, Mark (Mark Robert) . The visionary leader : from mission statement to a thriving organization, here's your blueprint for building an inspired, cohesive customer-oriented team. Rocklin, CA : Prima Publ., 1992

Wall, Bob ; Solum, Robert S.; Sobol, Mark (Mark Robert) . 1992. The visionary leader : from mission statement to a thriving organization, here's your blueprint for building an inspired, cohesive customer-oriented team. Prima Publ., Rocklin, CA