(1995). Environment some focal issues. BSMS.
Chicago Style (17. basım) AtıfEnvironment Some Focal Issues. Dehra Dun: BSMS, 1995.
MLA (9th ed.) AtıfEnvironment Some Focal Issues. BSMS, 1995.
Uyarı: Bu alıntı herzaman %100 doğru olmayabilir..
(1995). Environment some focal issues. BSMS.
Chicago Style (17. basım) AtıfEnvironment Some Focal Issues. Dehra Dun: BSMS, 1995.
MLA (9th ed.) AtıfEnvironment Some Focal Issues. BSMS, 1995.