Zainuddin Zakaria & Ziadatul Hidayah Zakaria. (2006). Komunikasi efektif. PTS Professional Publishing.
Chicago Style (17th ed.) CitationZainuddin Zakaria and Ziadatul Hidayah Zakaria. Komunikasi Efektif. Kuala Lumpur: PTS Professional Publishing, 2006.
MLA (8th ed.) CitationZainuddin Zakaria and Ziadatul Hidayah Zakaria. Komunikasi Efektif. PTS Professional Publishing, 2006.
Warning: These citations may not always be 100% accurate.