APA

Derenok A. N., Chulkov N. A. & Sechin A. A.Certification educational and workplaces in educational esteblishments of Tomsk region. : .

Chicago

Derenok A N, Chulkov N A and Sechin A A.Certification educational and workplaces in educational esteblishments of Tomsk region. : .

Harvard

Derenok A. N., Chulkov N. A. and Sechin A. A.Certification educational and workplaces in educational esteblishments of Tomsk region. : .

MLA

Derenok A N, Chulkov N A and Sechin A A.: . .