sariah is writing a research paper for literature class where she must cite many sources. she decides to make a tool to automate the citation process, and comes up with the following algorithm for citing a book: split author name into first name and last name. combine last name, comma, first name, and period. combine title with period, and wrap in italics style. combine publisher, comma, year published, and period. combine strings from steps 2-4. after using the algorithm successfully for a single book, she decides to extend it to generate citations for all of her books at once. what structure must be added to the original algorithm so that it can operate on multiple books?