Here's a specific reference to the style used by the eighth edition of the MLA Handbook (3.3.3):
If the work is divided into stable numbered sections like chapters,
the numbers of those sections may be cited, with a label identifying
the type of part that is numbered.
According to Hazel Rowley, Franklin and Eleanor Roosevelt began their
honeymoon with a week's stay at Hyde Park (ch. 2).
Part numbers in any source should be cited only if they are explicit
(visible in the document) and fixed (the same for all users of the
document). Do not count unnumbered parts manually. A source without
page numbers or any other form of explicit, fixed part number must be
cited as a whole; include in the text or in a parenthesis enough
information for the reader to find the corresponding entry in the
words-cited list—usually the author's last name.
This is an in-text reference to a chapter in a book that's in a works-cited list. As far as I can tell, works-cited entries do not, themselves, include references to chapters.
As for the format of the entry for the book itself in the works-cited list, it would, in general, look like this:
Rowley, Hazel. Some Book Title. Some publisher, date.
The question cannot be answered more specifically without more information. (The style to use, additional relevant information about the specific book, and so on.)