Markam, S. (2005). Latihan Vitalisasi Otak. PT. Gramedia Widiasarana.
Chicago Style (17th ed.) CitationMarkam, Soemarmo. Latihan Vitalisasi Otak. PT. Gramedia Widiasarana, 2005.
MLA (8th ed.) CitationMarkam, Soemarmo. Latihan Vitalisasi Otak. PT. Gramedia Widiasarana, 2005.
Warning: These citations may not always be 100% accurate.