diff --git a/raw/sources.bib b/raw/sources.bib
index 4e5fb3f..9b479f7 100644
--- a/raw/sources.bib
+++ b/raw/sources.bib
@@ -3150,3 +3150,18 @@ @unpublished{Zorc1972
 	note = {http://sealang.net/archives/zorc/},
 	title = {Proto-Philippine worksheet for Kamayo},
 	year = {1972}}
+
+@unpublished{Zorc1972Naturalis,
+	author = {Zorc, David P.},
+	note = {http://sealang.net/archives/zorc/},
+	title = {Swadesh 200 word list for Naturalis},
+	year = {1972}}
+
+@book{Zorc1977,
+	address = {Canberra},
+	author = {Zorc, David Paul},
+	publisher = {Research School of Pacific Studies, Australian National University},
+	series = {Pacific Linguistics: Series C},
+	title = {The Bisayan dialects of the Philippines: Subgrouping and reconstruction},
+	volume = {44},
+	year = {1977}}
\ No newline at end of file