Bergancia, H. B., Carandang, C. N., Fortich, S. P., Jamili, J. R., Ko, J. T., Ng, E. O., . . . Sia, C. G. (1999). A feasibility study on the production of cari-card-tures greeting cards. Animo Repository.

Bergancia, Herbert B., Charlton N. Carandang, Sofronio P. Fortich, Jhowell R. Jamili, Jacqueline T. Ko, Eden O. Ng, Melody Grace L. Ong, و Christian G. Sia. A Feasibility Study On the Production of Cari-card-tures Greeting Cards. Animo Repository, 1999.

Bergancia, Herbert B., et al. A Feasibility Study On the Production of Cari-card-tures Greeting Cards. Animo Repository, 1999.