Rule 5: Order [the] elements included in a bibliographic record in the most appropriate way to retrieve the book.
For example, if the books are retrieved according to the author, the author element should appear first. If the books are retrieved according to their title, the title element should appear first.
Jerome, J.K. - Three Men in a Boat - 1889 Palahniuk, C. - Fight Club - 1996 Wodehause, P.G. - Something Fresh - 1915
Fight Club - Palahniuk, C. - 1996 Something Fresh - Wodehause, P.G. - 1915 Three Men in a Boat - Jerome, J.K. - 1889
1889 - Three Men in a Boat - Jerome, J.K. 1915 - Something Fresh - Wodehause, P.G. 1996 - Fight Club - Palahniuk, C.
I try to understand whether the definite article should be used in such a case.
On the one hand, we talk about elements included in a bibliographic record. They are not "just" elements.
On the other hand, "a bibliographic record" itself is used in indefinite sense.