Gaya APA

DRUCKER, P, F., Maciariello, J, A. (2004). The Daily Drucker (1). New YorkNew YorkNew York: HarperCollins Publishers.

Gaya MLA

DRUCKER, Peter, F., Maciariello, Joseph, A.. "The Daily Drucker". 1 New YorkNew YorkNew York: HarperCollins Publishers, 2004. Text.