Turkey Sticker Visa Requirements:-

1. Six Month valid passport 
2. 3 color photo (2x2 size matte paper)
3. Marriage certificate (if a married couple is traveling together)
4. NID card
5. Bank Statement (Last Six Month) and Bank Solvency Certificate.
6. Letter of introduction from the company/employer of the applicant
7. Trade license (If Business)
8. Income tax return / TIN (Attested by a Notary Public)
9. Membership to any trade body (Attested by a Notary Public)

Turkey E-visa requirement :

1. Valid UK, U.S.A, Schengen visa
2. Passport copy