There are six main kinds of reference words.
1. Personal pronouns
The personal pronouns are I, you, she, he, it, we, they.
EX: The new policy is in place because it covers the current situation. | It refers to new policy.
2. Possessive pronouns
The possessive pronouns show a relationship of ownership or ‘belonging to’. They are: my, mine, your, yours, his, her, hers, its, our, ours, their, theirs.
EX: Mary and Bill have a new car. Their new car is blue. | Their refers to Mary and Bill.
Demonstratives are similar to personal and possessive pronouns in that they refer to nouns usually already present in the text. However, they have a stronger pointing quality – they identify (point at) exactly which thing or things are being referred to.
The most common demonstratives are: this, that (singular), these, those (plural), such.
EX: The scientists conducted a successful study. That study has since been published. | That refers back to the successful study already mentioned.
You can read the entire article by registering.