Harvard:
Frohnmeyer, L.J. xxxx, "A progressive grammar of the Malayalam language",
APA:
Frohnmeyer, L.J. (xxxx). A progressive grammar of the Malayalam language. .
Chicago:
Frohnmeyer, L. Johannes. xxxx. "A Progressive Grammar of the Malayalam Language." .
MLA:
Frohnmeyer, L. Johannes. "A Progressive Grammar of the Malayalam Language." (xxxx): .
Citation within the text:
(Frohnmeyer xxxx)
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BibTeX:
@article{frohnmeyerxxxxprogressive,
  title = {A progressive grammar of the Malayalam language},
  author = {FROHNMEYER, L. Johannes},
  year = {xxxx},
  keywords = {India;Language},
  BAS = {199719},
  source = {bas},
}