(1979). തിരഞ്ഞെടുത്ത ശാസ്ത്ര കഥകള് (1st.). Scientific Technical And Educatonal Publishing Co-operative Society.
Chicago Stili Alıntıതിരഞ്ഞെടുത്ത ശാസ്ത്ര കഥകള്. 1st. Scientific Technical And Educatonal Publishing Co-operative Society, 1979.
MLA Alıntıതിരഞ്ഞെടുത്ത ശാസ്ത്ര കഥകള്. 1st. Scientific Technical And Educatonal Publishing Co-operative Society, 1979.
Uyarı: Bu alıntı herzaman %100 doğru olmayabilir..