Cita APA

Caulkins, J. P. 1. -., & Caulkins, J. P. 1. -. (1999). An ounce of prevention, a pound of uncertainty: The cost-effectiveness of school-based drug prevention programs. Santa Mónica, CA: Rand.

Citación estilo Chicago

Caulkins, Jonathan Paul 1965 -, y Jonathan Paul 1965 - Caulkins. An Ounce of Prevention, a Pound of Uncertainty: The Cost-effectiveness of School-based Drug Prevention Programs. Santa Mónica, CA: Rand, 1999.

Cita MLA

Caulkins, Jonathan Paul 1965 -, y Jonathan Paul 1965 - Caulkins. An Ounce of Prevention, a Pound of Uncertainty: The Cost-effectiveness of School-based Drug Prevention Programs. Santa Mónica, CA: Rand, 1999.