J. D. . Alvarez, “Modeling The Effects of Supplier and Customer Integrationon Business Performance and ‎Competitiveness: The Mediating Role of Internal Integration among Coffee and Tea Shops in ‎Batangas City”, IJBAS, vol. 14, no. 8, pp. 351–361, Dec. 2025, doi: 10.14419/yyk4pp72.