APA

Wilkins M., . (2000). Administering SMS. New York: McGraw-Hill.

Chicago

Wilkins Mark, . 2000. Administering SMS. New York: McGraw-Hill.

Harvard

Wilkins M., . (2000). Administering SMS. New York: McGraw-Hill.

MLA

Wilkins Mark, . Administering SMS. New York: McGraw-Hill. 2000.