Callo, D. P., Medina, J. R., Teofilo, L. B., Tauli, H. A., & Cuaterno, W. R. (2002). Manual of participatory technology development activities for IPM in vegetables. KASAKALIKASAN, The Philippine National IPM Program.

Callo, Damaso P., Jose R. Medina, Landis B. Teofilo, Harriet A. Tauli, and Wilma R. Cuaterno. Manual of Participatory Technology Development Activities for IPM in Vegetables. Diliman, Quezon City: KASAKALIKASAN, The Philippine National IPM Program, 2002.

Callo, Damaso P., et al. Manual of Participatory Technology Development Activities for IPM in Vegetables. KASAKALIKASAN, The Philippine National IPM Program, 2002.