APA
Chokroverty S., . (2000). Clinical companion to sleep disorders medicine. Oxford: Butterworth Heinemann.
Chicago
Chokroverty Sudhansu, . 2000. Clinical companion to sleep disorders medicine. Oxford: Butterworth Heinemann.
Harvard
Chokroverty S., . (2000). Clinical companion to sleep disorders medicine. Oxford: Butterworth Heinemann.
MLA
Chokroverty Sudhansu, . Clinical companion to sleep disorders medicine. Oxford: Butterworth Heinemann. 2000.