Não informado. (1967). Health consequences of smoking. Health Services and Mental Health Administration.
Citação do estilo Chicago (17ª ed.)Não informado. Health Consequences of Smoking. Washington: Health Services and Mental Health Administration, 1967.
Citação MLA (8ª ed.)Não informado. Health Consequences of Smoking. Health Services and Mental Health Administration, 1967.
警告：这些引文格式不一定是100％准确.