[...] the Paradigm Function theory might seem to afford two different conceptions of rules of referral. First, one might assume that a rule of referral encompasses whole words [...]. Alternatively, one might assume that rules of referral encompass the individual steps by which a fully inflected word is built up from the root of its inflectional paradigm [...]. I shall refer to this approach to rules of referral as the NARROW APPROACH.
- Stump (2004), Pag. 111-112