Kondratov,Alexander. (1974). The riddles of three oceans. Progress publishers.
Chicago Style aipamenaKondratov,Alexander. The Riddles of Three Oceans. Moscow: Progress publishers, 1974.
MLA aipamenaKondratov,Alexander. The Riddles of Three Oceans. Progress publishers, 1974.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.