Harvard:
Bell, C.A. xxxx, "Grammar of colloquial Tibetan",
APA:
Bell, C.A. (xxxx). Grammar of colloquial Tibetan. .
Chicago:
Bell, Charles A. xxxx. "Grammar of Colloquial Tibetan." .
MLA:
Bell, Charles A. "Grammar of Colloquial Tibetan." (xxxx): .
Citation within the text:
(Bell xxxx)
Zotero:
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BibTeX:
@article{bellxxxxgrammar,
  title = {Grammar of colloquial Tibetan},
  author = {BELL, Charles A.},
  year = {xxxx},
  address = {Repr ed},
  keywords = {Tibet;Language},
  x-extra = {Repr ed},
  BAS = {80182},
  source = {bas},
}