A reference manual is a book or document that provides information and instructions about a particular subject or topic. It serves as a go-to guide for finding answers or understanding how things work. Full definition
A good reference manual for baby care will provide solid information on health issues presented by infants. (dadsadventure.com)
Teachers have the option of conducting this activity through an interactive Internet program, or through reference manuals in the classroom. (thescienceofsoil.com)
A comprehensive reference manual is also available for download as a PDF. (web.utk.edu)