Harvard:
Haupers, R. and Haupers, L. 0nd0, "Stieng--English thesaurus",
APA:
Haupers, R. and Haupers, L. (0nd0). Stieng--English thesaurus. .
Chicago:
Haupers, Ralph and Lorraine Haupers. 0nd0. "Stieng--English Thesaurus." .
MLA:
Haupers, Ralph and Lorraine Haupers. "Stieng--English Thesaurus." 0nd0, .
Citation within the text:
(Haupers & Haupers 0nd0)
Zotero:
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BibTeX:
@unpublished{haupers0nd0stieng,
  author = {Haupers, Ralph and Haupers, Lorraine},
  title = {Stieng--English thesaurus},
  year = {0nd0},
  keywords = {Stieng: Thesaurus, Stieng-Eng},
  x-manuscript = {ms., Summer Institute of Linguistics/University of North Dakota},
  source = {Huffman86-a-k},
}