Sophia Learning
Sophia: Apostrophes: Lesson 13
This lesson introduces apostrophes and how they are used. It is 13 of 13 in the series titled "Apostrophes."
Sophia Learning
Sophia: Apostrophes: Lesson 9
This lesson introduces apostrophes and how they are used. It is 9 of 13 in the series titled "Apostrophes."
Online Writing Lab at Purdue University
Purdue University Owl: Possessive Pronoun and Apostrophe
This Purdue Online Writing Lab article explains the three uses of the apostrophe.
English Plus+
Grammar Slammer's Apostrophes Showing Possession
This site discusses the correct and incorrect usage of apostrophes to show possession and examples are provided. Note that links are provided at the bottom of the page for other specific uses of the apostrophe.
Sophia Learning
Sophia: Apostrophe Guidelines for Possessives
This lesson explains the use of apostrophes to form possessives.
English Plus+
Apostrophes With Possessives of More Than One Owner
When to use the apostrophe when more than one person shares the same item, and when similar items are owned individually by different owners. Examples are provided.