Cita APA (7a ed.)

Sahal, D., & Nelson, R. R. (1981). Patterns of technological innovation. Addison-Wesley.

Cita Chicago Style (17a ed.)

Sahal, Devendra, y Richard R. Nelson. Patterns of Technological Innovation. Reading, Massachusetts [etc.]: Addison-Wesley, 1981.

Cita MLA (9a ed.)

Sahal, Devendra, y Richard R. Nelson. Patterns of Technological Innovation. Addison-Wesley, 1981.