cross-reference
/ˈkrɑːsˈrɛfrəns/
noun
plural -ences
[count] :a note in a book (such as a dictionary) that tells you where to look for more information
verb
-ences; -enced; -encing
[+ obj] :to supply (something, such as a book) with cross-references
cross-refer [no obj]
US