APA (7th ed.) Citation

Parlindungan Marpaung & Hasnah Daud. (2009). Mencari makna hidup. PTS Millennia.

Chicago Style (17th ed.) Citation

Parlindungan Marpaung and Hasnah Daud. Mencari Makna Hidup. Selangor: PTS Millennia, 2009.

MLA (8th ed.) Citation

Parlindungan Marpaung and Hasnah Daud. Mencari Makna Hidup. PTS Millennia, 2009.

Warning: These citations may not always be 100% accurate.