Citação norma APA

Sigel, E. (1983). The future of videotext: Worldwide prospects for home/office electronic information services. White Plains, NY: Knowledge Industry Publications.

Citação norma Chicago

Sigel, Efrem. The Future of Videotext: Worldwide Prospects for Home/office Electronic Information Services. White Plains, NY: Knowledge Industry Publications, 1983.

Citação norma MLA

Sigel, Efrem. The Future of Videotext: Worldwide Prospects for Home/office Electronic Information Services. White Plains, NY: Knowledge Industry Publications, 1983.

Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.