APA (7th ed.) Citation

Wilmes, L., Wilmes, D., & Healy, J. (1985). Parachute play. Building Blocks.

Chicago Style (17th ed.) Citation

Wilmes, Liz, Dick Wilmes, and Jeane Healy. Parachute Play. Elgin, Ill.: Building Blocks, 1985.

MLA (9th ed.) Citation

Wilmes, Liz, et al. Parachute Play. Building Blocks, 1985.