Gonick, L. (2007). Kartun Riwayat Peradaban Modern 2. KPG.
Lua i Stíl Chicago (17ú heag.)Gonick, Larry. Kartun Riwayat Peradaban Modern 2. KPG, 2007.
Lua MLA (8ú heag.)Gonick, Larry. Kartun Riwayat Peradaban Modern 2. KPG, 2007.
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