Ekelund, Robert B. Jr
Economics/ Robert B. Ekelund, Jr. , Robert D. Tollison
Little, Brown & Co., 1986
 Buku Teks SO
Whish, Richard
Competition law / Richard Whish, David Bailey
Oxford University Press, 2012
 Buku Teks
Ettinger, Richard P.
Credits and collections / Richard P. Ettinger and David E. Golieb
Prentice-Hall, 1950
 Buku Teks SO
Nabila Putriyandri Alifa
Identifikasi dan evaluasi pada Sequencing Batch Reactor (SBR) pengolahan limbah industri soft drink M = Identification and evaluation of Sequencing Batch Reactor (SBR) wastewater treatment soft drink M industry
Fakultas Teknik Universitas Indonesia, 2014
 UI - Skripsi Membership
Arvey, D. Richard
Fairness In Selecting Employees / Richard D. Arvey and Robert H. Faley
Addison-Wesley, 1988
 Buku Teks