Even though All My Sons is a play, there were a lot of literary aspects in it that made a very effective experience for the reader.
First off, there is the dramatic plot and storyline... no-one would ever guess what comes next, which is a quality shared with good literature.
Also, dialogue between characters added a lot of dimension into the play, which is another literary device also used in stories.
Finally, the character development really was extraordinary in the play. I felt like I could relate with every character, even though they all had such different outlooks and ideas.
For all these reasons, All My Sons used literary aspects of drama very effectively.