Cita APA (7th ed.)

Chester, T. (1997). Mastering excel 97 (4th.). BPB.

Cita Chicago (17th ed.)

Chester, Thomas. Mastering Excel 97. 4th. New delhi: BPB, 1997.

Cita MLA (9th ed.)

Chester, Thomas. Mastering Excel 97. 4th. BPB, 1997.