APA Citation

DRUCKER, P. F. Management Challenges for the 21 st Century. HarperCollins.

Chicago Style Citation

DRUCKER, Peter F. Management Challenges for the 21 St Century. HarperCollins.

MLA Citation

DRUCKER, Peter F. Management Challenges for the 21 St Century. HarperCollins.

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