Parker, L. Report on work among the Negritos of Pampanga during the period from April 15th to May 31st, 1908. s.n.
Chicago-referens (17:e uppl.)Parker, Luther. Report on Work Among the Negritos of Pampanga During the Period from April 15th to May 31st, 1908. [S.l: s.n.
MLA-referens (9:e uppl.)Parker, Luther. Report on Work Among the Negritos of Pampanga During the Period from April 15th to May 31st, 1908. s.n.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.