Gaya APA
Vas, Gratian. (1999).
Learning Science Book [4] (--).
New Delhi:
Learners ress Private Limited.
Gaya Chicago
Vas, Gratian.
Learning Science Book [4].
--
New Delhi:
Learners ress Private Limited,
1999.
Text.
Gaya MLA
Vas, Gratian.
Learning Science Book [4].
--
New Delhi:
Learners ress Private Limited,
1999.
Text.
Gaya Turabian
Vas, Gratian.
Learning Science Book [4].
--
New Delhi:
Learners ress Private Limited,
1999.
Print.