JUMABAYEV, Serik; RAIMBAYEV, Daniyar. Public control in the sphere of public administration: «The mystery shopper» method. Public Administration and Civil Service, Нур-Султан, Казахстан, n. 4 (71), p. 11–20, 2019. Disponível em: https://journal.apa.kz/index.php/path/article/view/67. Acesso em: 1 dec. 2025.