APA
M. W. Woerdeman, . (1970). Excerpta Medica. Amsterdam: Excerpta Medica Foundation.
Chicago
M. W. Woerdeman, . 1970. Excerpta Medica. Amsterdam: Excerpta Medica Foundation.
Harvard
M. W. Woerdeman, . (1970). Excerpta Medica. Amsterdam: Excerpta Medica Foundation.
MLA
M. W. Woerdeman, . Excerpta Medica. Amsterdam: Excerpta Medica Foundation. 1970.