Excerpt from change request document:
Sarasira and Sukurum were formerly listed as dialects of Adzera. However, even though they are closer geographically to Adzera villages, historically and linguistically they are more closely related to the Mari and Wampur languages, and are thus in a different subfamily of the Upper Markham language family to Adzera. Susanne Holzknecht has documented the linguistic differences in: Holzknecht, Susanne. 1989. The Markham Languages of Papua New Guinea. Pacific Linguistics C-115. Canberra: Australian National University. Her work provides sufficient proof that these speech varieties are indeed separate languages that belong in the Mountain subgroup of Upper Markham languages, rather than being included as dialects of Adzera. Malcolm Ross also treats these three languages as distinct languages of the Upper Markham subfamily in his 1986 Ph.D. dissertation, later published as: Ross, Malcolm D. 1988. Proto Oceanic and the Austronesian languages of Western Melanesia. Pacific Linguistics C-98. Canberra: Australian National University.