APA

Nelson S. L., Weverka P., . (1997). Office 97. New York: McGraw-Hill.

Chicago

Nelson S L, Weverka P, . 1997. Office 97. New York: McGraw-Hill.

Harvard

Nelson S. L., Weverka P., . (1997). Office 97. New York: McGraw-Hill.

MLA

Nelson S L, Weverka P, . Office 97. New York: McGraw-Hill. 1997.