Sarumpaet, R. I. Etiket Bergaul. Indonesia Publishing House.
Chicago Style (17th ed.) CitationSarumpaet, Raja Igel. Etiket Bergaul. Indonesia Publishing House.
MLA (8th ed.) CitationSarumpaet, Raja Igel. Etiket Bergaul. Indonesia Publishing House.
Warning: These citations may not always be 100% accurate.