Bezerra, Jaldemir Santana Batista, et al. “The Relationship Between Investments to Increase Human Capital in the HEI and the Return on Intellectual and Integrative Capital”. International Journal for Innovation Education and Research, vol. 9, no. 4, Apr. 2021, pp. 120-8, https://doi.org/10.31686/ijier.vol9.iss4.3026.