Whenever you are unsure how a word is spelled, check it in the dictionary. If you know that your spelling or grammar are poor, have the whole text checked by someone else. Even when the text is understandable, incorrect spelling reduces its overall quality. It is appropriate to place such words in quotation marks. To write it as Sinanthropus means that you think these fossils are so different from other human fossils and living man as to be recognised as a genus distinct from Homo .
Some books are collections of articles by several authors, edited by one or more people.
The publication date is indicated on the cover page of periodicals. For books, the date of publication is found on or near the title page. The references are listed in alphabetical order, following the surname of the first author. If an author is cited several times, the name is written once. Forother references, the date is sufficient.