Não informado. (1991). Professional care mother & child. Professional, Managerial & Healthcare Publications.
Citação do estilo Chicago (17ª ed.)Não informado. Professional Care Mother & Child. London: Professional, Managerial & Healthcare Publications, 1991.
Citação MLA (8ª ed.)Não informado. Professional Care Mother & Child. Professional, Managerial & Healthcare Publications, 1991.
警告：这些引文格式不一定是100％准确.