International Co-operative Seminar Berastagi, Indonesia, Friedrich-Ebert-Stiftung, Indonesia. Direktorat Jenderal Koperasi, & Yayasan Tenaga Kerja Indonesia. (1975). Selected problems of co-operative development: International Co-operative Seminar, 8th-17th April 1975, Berastagi, North-Sumatra, Indonesia. s.n.].
Chicago Style (17th ed.) CitationInternational Co-operative Seminar Berastagi, Indonesia, Friedrich-Ebert-Stiftung, Indonesia. Direktorat Jenderal Koperasi, and Yayasan Tenaga Kerja Indonesia. Selected Problems of Co-operative Development: International Co-operative Seminar, 8th-17th April 1975, Berastagi, North-Sumatra, Indonesia. [Berastagi?: s.n.], 1975.
MLA (8th ed.) CitationInternational Co-operative Seminar Berastagi, Indonesia, et al. Selected Problems of Co-operative Development: International Co-operative Seminar, 8th-17th April 1975, Berastagi, North-Sumatra, Indonesia. s.n.], 1975.