Cita APA (7th ed.)

Sealey, G. B. (1980). Development of computer-based systems. Blackie and Son, Ltd.

Cita Chicago (17th ed.)

Sealey, Gail B. Development of Computer-based Systems. London: Blackie and Son, Ltd, 1980.

Cita MLA (9th ed.)

Sealey, Gail B. Development of Computer-based Systems. Blackie and Son, Ltd, 1980.