MUSHURE, Gilbert O'Neil. Perception of the External Environment in Zimbabwe 2008 . International Journal of Sciences: Basic and Applied Research (IJSBAR), Jordan, v. 22, n. 2, p. 329–340, 2015. Disponível em: https://gssrr.org/JournalOfBasicAndApplied/article/view/3800. Acesso em: 11 sep. 2025.