HELLER P, . (1999). ESSENTIAL MANAGERS, MAKING DECISIONS (PARTICIPATING FORECASTING LEARNING RISKS ASSESSING PROCESS TRUST - OBJECTIVES ROLES FOCUS- TIMING TIPS SYSTEMS AIMS. : DORLING KINDERSLEY LONDON.
HELLER P, . 1999. ESSENTIAL MANAGERS, MAKING DECISIONS (PARTICIPATING FORECASTING LEARNING RISKS ASSESSING PROCESS TRUST - OBJECTIVES ROLES FOCUS- TIMING TIPS SYSTEMS AIMS. : DORLING KINDERSLEY LONDON.
HELLER P, . ESSENTIAL MANAGERS, MAKING DECISIONS (PARTICIPATING FORECASTING LEARNING RISKS ASSESSING PROCESS TRUST - OBJECTIVES ROLES FOCUS- TIMING TIPS SYSTEMS AIMS. : DORLING KINDERSLEY LONDON. 1999.