APA

Soveif M., El-Sayed A. M., Honnovrah M. A. & Darweash Z. A. (19810723). The non-medical use of psychoactive substances among secondary school male students in Egypt: an epidemiological study (a brief report). : The Egyptian journal of psychiatry : official journal of the Egyptian Psychiatric Association.

Chicago

Soveif M, El-Sayed A M, Honnovrah M A and Darweash Z A. 19810723. The non-medical use of psychoactive substances among secondary school male students in Egypt: an epidemiological study (a brief report). : The Egyptian journal of psychiatry : official journal of the Egyptian Psychiatric Association.

Harvard

Soveif M., El-Sayed A. M., Honnovrah M. A. and Darweash Z. A. (19810723). The non-medical use of psychoactive substances among secondary school male students in Egypt: an epidemiological study (a brief report). : The Egyptian journal of psychiatry : official journal of the Egyptian Psychiatric Association.

MLA

Soveif M, El-Sayed A M, Honnovrah M A and Darweash Z A. The non-medical use of psychoactive substances among secondary school male students in Egypt: an epidemiological study (a brief report). : The Egyptian journal of psychiatry : official journal of the Egyptian Psychiatric Association. 19810723.