APA
Om Books Editorial Team, . (2016). Space Encyclopaedia. India: Om Books International.
Chicago
Om Books Editorial Team, . 2016. Space Encyclopaedia. India: Om Books International.
Harvard
Om Books Editorial Team, . (2016). Space Encyclopaedia. India: Om Books International.
MLA
Om Books Editorial Team, . Space Encyclopaedia. India: Om Books International. 2016.