HELLER ROBERT. (1992). BUSINESS OF WINNING: HOW TO SUCCEED IN BUSINESS BY REALLY TRYING. RUPA & COMPANY.
Цитирование в стиле Чикаго (17-е изд.)HELLER ROBERT. BUSINESS OF WINNING: HOW TO SUCCEED IN BUSINESS BY REALLY TRYING. MUMBAI: RUPA & COMPANY, 1992.
Цитирование MLA (9-е изд.)HELLER ROBERT. BUSINESS OF WINNING: HOW TO SUCCEED IN BUSINESS BY REALLY TRYING. RUPA & COMPANY, 1992.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.