Try a different spelling or fewer words — or look in these trusted academic sources. The library team can also source a title through inter-library loan.
Ask a librarian
Engel H. M., . (1983). How to delegate. Bombay: Jaico publishing.
Engel Herbert M, . 1983. How to delegate. Bombay: Jaico publishing.
Engel Herbert M, . How to delegate. Bombay: Jaico publishing. 1983.