APA

Dublyansky V. N., Ilyukhin V., .Speleology in the USSR. : .

Chicago

Dublyansky V N, Ilyukhin V.V, .Speleology in the USSR. : .

Harvard

Dublyansky V. N., Ilyukhin V., .Speleology in the USSR. : .

MLA

Dublyansky V N, Ilyukhin V.V, .: . .