Final answer:
Italics and bold text are used by publishers to highlight important information. Italics are for long works like book titles, while bold is for key terms. In academic citations, book titles are italicized with capitalized significant words.
Step-by-step explanation:
Publishing companies use italics and bold to denote important words and titles within books and other printed materials. Italics are typically used for titles of long works such as books, movies, and TV shows, as well as for foreign words, while bold text often highlights vocabulary or significant terms within the text. When citing these works, the title of a book or journal is italicized, which signifies its long-form nature and separates it from shorter works, such as articles, which are placed within quotation marks.
In academic writing, proper citations are important. A book title is presented in italics with significant words capitalized, and is followed by details like the publisher and year of publication. When an author’s name is unknown, the work's title is used in a signal phrase or in parentheses in italics if it’s a book, or in quotation marks if it’s an article.