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Vermeulen, M., Anke Vroomen, Mark Wolbert, Jaap Hoenderdos, Harlan C. A. Cloete, Tonia Van Niekerk, and Erwin Schwella. Social Profit Canvas: Starting Point for Social Profit and Value. Devonvallei, Stellenbosch: Sun Media, 2022.

Vermeulen, M., et al. Social Profit Canvas: Starting Point for Social Profit and Value. Sun Media, 2022.