APA引文

Douglas, H. (1967). Hotel-keeping and catering. Robert Hale.

Chicago Edition Citation

Douglas, Hugh. Hotel-keeping and Catering. London: Robert Hale, 1967.

MLA引文

Douglas, Hugh. Hotel-keeping and Catering. Robert Hale, 1967.

警告：这些引文格式不一定是100％准确.