Romero, R. M., Vidal Espinoza, L. O., & Ramírez Hernández, D. (2019). Organic chemistry basic concepts teaching in students of large groups at Higher Education and Web 2.0 tools. Universidad de Costa Rica.

Romero, Rosaura M., Leonidas O. Vidal Espinoza, and Darinka Ramírez Hernández. Organic Chemistry Basic Concepts Teaching in Students of Large Groups at Higher Education and Web 2.0 Tools. Universidad de Costa Rica, 2019.

Romero, Rosaura M., et al. Organic Chemistry Basic Concepts Teaching in Students of Large Groups at Higher Education and Web 2.0 Tools. Universidad de Costa Rica, 2019.