APA
Harbans Singh, University of Delhi. Faculty of Medical Sciences. Department of Medicine, Dr Harmanjit Singh Hira Supervisor & University of Delhi. Faculty of Medical Sciences. Department of Medicine. (1989). Assessment of upper airway obstruction by pulmonary function tests. : .
Chicago
Harbans Singh, University of Delhi. Faculty of Medical Sciences. Department of Medicine, Dr Harmanjit Singh Hira Supervisor and University of Delhi. Faculty of Medical Sciences. Department of Medicine. 1989. Assessment of upper airway obstruction by pulmonary function tests. : .
Harvard
Harbans Singh, University of Delhi. Faculty of Medical Sciences. Department of Medicine, Dr Harmanjit Singh Hira Supervisor and University of Delhi. Faculty of Medical Sciences. Department of Medicine. (1989). Assessment of upper airway obstruction by pulmonary function tests. : .
MLA
Harbans Singh, University of Delhi. Faculty of Medical Sciences. Department of Medicine, Dr Harmanjit Singh Hira Supervisor and University of Delhi. Faculty of Medical Sciences. Department of Medicine. Assessment of upper airway obstruction by pulmonary function tests. : . 1989.