Here is a booklet of the chants for the 28th Sunday in Ordinary Time.
Officium: Si iniquitates
Responsorium: Ecce quam bonum
Alleluia: Qui timent Dominum
Offertorium: Recordare mei
Communio: Aufer a me
This set does not include the Year A Gradual/Responsory Si ambulem.
The Suarez Gradual gives a very faithful reading of these chants in comparison with the manuscripts. Some further editorial work is needed for the rhythm on the Responsory, Alleluia, and Offertory, but the notes and flats are all correct.