Zorc, R. David. 1979. Core etymological dictionary of Filipino. Typescript, 61pp, dated August, 1979.
@misc{zorc1979, author = {Zorc, R. David}, howpublished = {Typescript, 61pp, dated August, 1979}, key = {Zorc 1979}, title = {Core etymological dictionary of Filipino}, year = {1979} }