Gaya APA

Management. (1999). Amerika: Prentice-Hall.

Gaya Chicago

Management. Ed. 6. Amerika: Prentice-Hall, 1999. .

Gaya MLA

Management. Ed. 6. Amerika: Prentice-Hall, 1999. .

Gaya Turabian

Management. Amerika: Prentice-Hall, 1999. .