Cita APA (7th ed.)

Sheppard, S. E., & Carroll, D. C. (1980). Working in the twenty-first century. John Wiley and Sons.

Cita Chicago (17th ed.)

Sheppard, Stewart E., i Donal C. Carroll. Working in the Twenty-first Century. John Wiley and Sons, 1980.

Cita MLA (9th ed.)

Sheppard, Stewart E., i Donal C. Carroll. Working in the Twenty-first Century. John Wiley and Sons, 1980.