Cita APA (7a ed.)

Olsen, E. (2014). Microsoft Excel: Multiple worksheets & external data. InfiniteSkills.

Cita Chicago Style (17a ed.)

Olsen, Erin. Microsoft Excel: Multiple Worksheets & External Data. [Place of publication not identified]: InfiniteSkills, 2014.

Cita MLA (8a ed.)

Olsen, Erin. Microsoft Excel: Multiple Worksheets & External Data. InfiniteSkills, 2014.