PLOEGER, J. Boodskap van gelukwensing/Congratulatory message. Scientia Militaria: South African Journal of Military Studies, [S. l.], v. 21, n. 2, p. 1–2, 2016. Disponível em: https://www.ajol.info/index.php/smsajms/article/view/143134. Acesso em: 28 sep. 2026.