Spalton, P. (2012). Teknik terhebat promosi diri dan produk. PTS Professional Publishing.
Chicago Style (17th ed.) CitationSpalton, Peter. Teknik Terhebat Promosi Diri Dan Produk. Selangor, Malaysia: PTS Professional Publishing, 2012.
MLA (9th ed.) CitationSpalton, Peter. Teknik Terhebat Promosi Diri Dan Produk. PTS Professional Publishing, 2012.
Warning: These citations may not always be 100% accurate.