@book{o'mara_tierney_1978, 
  title={RAPS 2--An Abridged Version of the Racial Attitudes and Perceptions Survey}, 
  DOI={10.21236/ada064256}, 
  institution={Defense Technical Information Center}, 
  author={O'Mara and Tierney}, 
  year={1978}, 
  month={Sep}
  }