Cita APA (7a ed.)

Williams, F. P., Dull, R. T., & Marshall, R. O. (1981). Alcohol and marijuana use in Texas. Sam Houston State Univ.

Cita Chicago Style (17a ed.)

Williams, Franklin P., R. Thomas Dull, y Ralph O. Marshall. Alcohol and Marijuana Use in Texas. Huntsville: Sam Houston State Univ, 1981.

Cita MLA (8a ed.)

Williams, Franklin P., et al. Alcohol and Marijuana Use in Texas. Sam Houston State Univ, 1981.