Gittinger, J. P. (1990). Evaluasi Proyek J. Price Gittinger. s.n.
Chicago Style (17th ed.) CitationGittinger, J. Price. Evaluasi Proyek J. Price Gittinger. s.n, 1990.
MLA (8th ed.) CitationGittinger, J. Price. Evaluasi Proyek J. Price Gittinger. s.n, 1990.
Warning: These citations may not always be 100% accurate.