I am currently reading Free Food For Millionaires by Min Jin Lee.

I feel like its missing something. Should I put quotation marks around the title of the book?

Book titles are italicized.

I am currently reading Free Food For Millionaires by Min Jin Lee.

Underling is also acceptable. Free Food for Millionaires.

All titles of entire works (books, movies, television shows, etc.) are italicized or underlined. Chapter titles, magazine or newspaper articles contained within the larger publication, song titles, etc., are in quotation marks. An article in Time, "President Trump's speech", quotes him as saying...

Another example would be: In "The Soup Nazi" episode of Seinfeld, Elaine has a really funny line.

On the Simon and Garfunkel Greatest Hits CD, my favorite song is "The Sound of Silence".

When it comes to formatting book titles, it's important to follow the specific style guidelines or rules provided by the publishing industry or the academic institution you're writing for. That being said, there are different conventions for formatting book titles depending on whether you're writing in a formal or informal context.

In general, if you're writing informally, such as in an email or a personal blog post, you can use quotation marks to indicate the title of a book, like "Free Food For Millionaires."

On the other hand, if you're writing in a more formal context, such as an academic paper or a published article, it is common to use italics instead of quotation marks to indicate the title of a book, like Free Food For Millionaires.

If you're unsure or need to adhere to a specific style guide (such as APA or MLA), it's always a good idea to consult the relevant guidelines. These style guides provide specific rules on punctuation and formatting, including how to format book titles.