Sager, P. (1969). Spondylosis cervicalis: A pathological and osteoarchaeological study of osteochondrosis intervertebralis cervicalis, arthrosis uncovertebralis, and spondylarthrosis cervicalis. Copenhagen.
Chicago-referens (17:e uppl.)Sager, Philip. Spondylosis Cervicalis: A Pathological and Osteoarchaeological Study of Osteochondrosis Intervertebralis Cervicalis, Arthrosis Uncovertebralis, and Spondylarthrosis Cervicalis. Munksgaard: Copenhagen, 1969.
MLA-referens (8:e uppl.)Sager, Philip. Spondylosis Cervicalis: A Pathological and Osteoarchaeological Study of Osteochondrosis Intervertebralis Cervicalis, Arthrosis Uncovertebralis, and Spondylarthrosis Cervicalis. Copenhagen, 1969.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.