APA (7th ed.) Citation

ENGEL. (1983). How to delegate: A guide to getting things done. Gulf Pubs.Co..

Chicago Style (17th ed.) Citation

ENGEL. How to Delegate: A Guide to Getting Things Done. London: Gulf Pubs.Co., 1983.

MLA (9th ed.) Citation

ENGEL. How to Delegate: A Guide to Getting Things Done. Gulf Pubs.Co., 1983.

Warning: These citations may not always be 100% accurate.