LUMBANTORUAN, S. (1990). Ensiklopedi perpajakan Indonesia, cet. 1 & 2 (1987, 1990). Erlangga.
Chicago Style (17th ed.) CitationLUMBANTORUAN, Sophar. Ensiklopedi Perpajakan Indonesia, Cet. 1 & 2 (1987, 1990). Erlangga, 1990.
MLA (8th ed.) CitationLUMBANTORUAN, Sophar. Ensiklopedi Perpajakan Indonesia, Cet. 1 & 2 (1987, 1990). Erlangga, 1990.
Warning: These citations may not always be 100% accurate.