Cita APA (7a ed.)

Sund, R. B., Tillery, B. W., & Trowbridge, L. W. (1970). Elementary science discovery lessons. Allyn and Bacon.

Cita Chicago Style (17a ed.)

Sund, Robert B., Bill W. Tillery, y Leslie W. Trowbridge. Elementary Science Discovery Lessons. Boston: Allyn and Bacon, 1970.

Cita MLA (8a ed.)

Sund, Robert B., et al. Elementary Science Discovery Lessons. Allyn and Bacon, 1970.