Dimitrov, G., Георгиева, М. On Independent Forms of Tuition at Schools of Higher Education. Габрово: Унив. изд. В. Априлов, 2003 с. 246 - 247, ISBN 954-683-167-0.
Dimitrov, G., Георгиева, М. On Independent Forms of Tuition at Schools of Higher Education. Габрово: Унив. изд. В. Априлов, 2003 с. 246 - 247, ISBN 954-683-167-0.
Dimitrov, G., Георгиева, М. (2003) On Independent Forms of Tuition at Schools of Higher Education, Габрово: Унив. изд. В. Априлов с. 246 - 247, ISBN 954-683-167-0.
Dimitrov, G., & Георгиева, М. (2003). On Independent Forms of Tuition at Schools of Higher Education. Габрово: Унив. изд. В. Априлов, с. 246 - 247.
Dimitrov G, Георгиева М. On Independent Forms of Tuition at Schools of Higher Education. Габрово: Унив. изд. В. Априлов; 2003. p. с. 246 - 247. ISBN: ISBN 954-683-167-0.