APA

Bal Inderjit Singh, University of Delhi. Faculty of Medical Sciences. Department of Otorhinolaryngology, Kakar P K Gu & University of Delhi. Faculty of Medical Sciences. Department of Otorhinolaryngology. (1971). Correlation of acute or chronic maxillary sinusitis with repeated lower respiratory tract infection in children. Delhi: University of Delhi India.

Chicago

Bal Inderjit Singh, University of Delhi. Faculty of Medical Sciences. Department of Otorhinolaryngology, Kakar P K Gu and University of Delhi. Faculty of Medical Sciences. Department of Otorhinolaryngology. 1971. Correlation of acute or chronic maxillary sinusitis with repeated lower respiratory tract infection in children. Delhi: University of Delhi India.

Harvard

Bal Inderjit Singh, University of Delhi. Faculty of Medical Sciences. Department of Otorhinolaryngology, Kakar P K Gu and University of Delhi. Faculty of Medical Sciences. Department of Otorhinolaryngology. (1971). Correlation of acute or chronic maxillary sinusitis with repeated lower respiratory tract infection in children. Delhi: University of Delhi India.

MLA

Bal Inderjit Singh, University of Delhi. Faculty of Medical Sciences. Department of Otorhinolaryngology, Kakar P K Gu and University of Delhi. Faculty of Medical Sciences. Department of Otorhinolaryngology. Correlation of acute or chronic maxillary sinusitis with repeated lower respiratory tract infection in children. Delhi: University of Delhi India. 1971.