Hey. I cant figure out this math problem. It's so hard. please help!!!!

MLA or APA
"The dog ran around outside and Sally could not stop him" (Smith 1).

Dear Dr. Smith,
I hope all is well. Can you please send me the doctor notes from last week?
Thank you,
Sally Sam

MLA or APA
"The dog ran around outside and Sally could not stop him" (Smith ,2021,P. 1).

Hello Professor,
My name is Sally Sam, I am in your KINS 123 class @11am MWF. I would like to meet with you tomorrow if possible. Please let me know when is best for you.
Best regards,
Sally Sam

MLA or APA
Smith, S. (2021) Outside Dogs. Publisher: Florida.

Yo. I need to pick up my books so I will be a bit late. hope this is ok. see u soon

Smith, Sally. Outside Gods. Publisher: Florida 2021

Hey! happy bday. hope u have a gr8 day

Do citations go on a separate paper from the paper or a whole different document?