Якубова, М. “XIX-XX АСР БОШЛАРИДА МАРКАЗИЙ ОСИЁГА ҚИЛИНГАН НЕМИС ЭКСПЕДИЦИЯЛАРИ ТАРИХИДАН”. Universal Science Research Jurnali, vol. 3, no. 6 (SPECIAL ISSUE), June 2025, pp. 28-33, https://www.inlibrary.uz/index.php/universal-scientific-research/article/view/113820.