Cita APA (7a ed.)

Bednarik, R. G. (1993). Geoarcheological dating of petroglyphs at Lake Onega, Russia. [s.n.].

Cita Chicago Style (17a ed.)

Bednarik, Robert G. Geoarcheological Dating of Petroglyphs at Lake Onega, Russia. [S.l.]: [s.n.], 1993.

Cita MLA (9a ed.)

Bednarik, Robert G. Geoarcheological Dating of Petroglyphs at Lake Onega, Russia. [s.n.], 1993.