de Oliveira, Sérgio Luis Inácio, and Márcia H.M. Ferraz. “Institutionalization of Marketing at the Beginning of the 20th Century: Ralph S. Butler´s Marketing Methods As Study Case”. Circumscribere International Journal for the History of Science 11 (April 15, 2012): 63–78. Accessed December 5, 2025. https://revistas.pucsp.br/index.php/circumhc/article/view/9133.