A Streetcar Named Desire - Tennessee Williams, New Edition by "A Streetcar Named Desire" AND "Stanley"
Online study note is a good way to start understanding the play. However, Without author name, date of publication, it is tricky to cite it in your essay. Be wise in using the key ideas from the note and do further research in databases. Academic articles are what you are expected to cite.
Use this:
Illusion and reality
Loneliness
Passon, sex and death
Madness
Desire and fate
Death
Tip: Think about the imagery, symbolism, foreshadowing or allegory in Streetcar.