APA
Gradwell J. B., Welch M. & Martin E. (2000). Technology-shaping our world. Tinley Park, IL: Goodheart-Willcox.
Chicago
Gradwell John B, Welch Malcolm and Martin Eugene. 2000. Technology-shaping our world. Tinley Park, IL: Goodheart-Willcox.
Harvard
Gradwell J. B., Welch M. and Martin E. (2000). Technology-shaping our world. Tinley Park, IL: Goodheart-Willcox.
MLA
Gradwell John B, Welch Malcolm and Martin Eugene. Technology-shaping our world. Tinley Park, IL: Goodheart-Willcox. 2000.