The main types of referring words are:
 Pronouns:
Personal (I, She, etc.).
Demonstrative (This, Those, etc.).
Relative (Who(m), Which, etc.).
 Determiners. For example:
All three came from the Midlands and had been at the sharp end of the business as salesmen for distribution companies.
 Other words and phrases. For example:
Former latter above below.
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