The general format below refers to a book with two authors.
If you are dealing with two editors instead of two authors, insert the names of the editors into the place where the authors' names are now, followed by a comma and the word "eds." without the quotation marks. The rest of the format remains the same.
1. Author First Name/Initial Surname and Author First Name/Initial Surname, Book Title: Subtitle (Place of Publication: Publisher, Year), page #.
2. Author Surname and Author Surname, Book Title, page #.
1. Liam P. Unwin and Joseph Galloway, Peace In Ireland (Boston: Stronghope Press, 1990), 139.
2. Unwin and Galloway, Peace in Ireland, 139.