APA

Wartzman R., Lafley A. G. & McGraw-Hill Companies. (2012). What would Drucker do now. New York [etc.]: McGraw-Hill.

Chicago

Wartzman Rick, Lafley Alan G and McGraw-Hill Companies. 2012. What would Drucker do now. New York [etc.]: McGraw-Hill.

Harvard

Wartzman R., Lafley A. G. and McGraw-Hill Companies. (2012). What would Drucker do now. New York [etc.]: McGraw-Hill.

MLA

Wartzman Rick, Lafley Alan G and McGraw-Hill Companies. What would Drucker do now. New York [etc.]: McGraw-Hill. 2012.