【正确答案】 B

【答案解析】How to cite reference sources within the text? Are there any rules to observe? The answer is definite. A bibliography consists of sources cited in text, sources consulted in preparing a paper, as well as other sources thought to be of use or interest to the reader. But a reference list consists only of the sources cited in a paper. The list is arranged alphabetically by the first author's surname. There is a format for listing different types of sources such as books, journal articles and web sources. These are set up by a special organization and there are numerous sources on the Web that outline the guidelines, for example Nuts and Bolts of College Writing which describes the different formats and also gives more advice on referencing within the essay text. Whafs more, the number of the reference sources that are listed should keep in step with the content of the essay, neither too much nor too little. If you have listed more reference sources than those used in your essay, your essay will be considered to be inveracious.