Gaya APA
http://portal.igpublish.com/iglibrary/obj/PACKT0005871?searchid=1621842283245w01VEadH6Elj4G_3HY~ox. ().
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Gaya Chicago
http://portal.igpublish.com/iglibrary/obj/PACKT0005871?searchid=1621842283245w01VEadH6Elj4G_3HY~ox.
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E-Book.
Gaya MLA
http://portal.igpublish.com/iglibrary/obj/PACKT0005871?searchid=1621842283245w01VEadH6Elj4G_3HY~ox.
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E-Book.
Gaya Turabian
http://portal.igpublish.com/iglibrary/obj/PACKT0005871?searchid=1621842283245w01VEadH6Elj4G_3HY~ox.
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E-Book.