Gaya APA

Whitten, J, L., C, I, B, L, D, I, D, K. (2000). Systems analysis and design methods . New York: .

Gaya MLA

Whitten, Jeffrey, L., C, I., Bentley,, Lonnie, D, II., Dittman,, Kevin. "Systems analysis and design methods". New York: , 2000. Text.