APA (7th ed.) Citation

Obee B & V. Evans. (2006). Upstream: Upper intermediate B 2+, teacher's book. Наука.

Chicago Style (17th ed.) Citation

Obee B and V. Evans. Upstream: Upper Intermediate B 2+, Teacher's Book. Express publishing: Наука, 2006.

MLA (8th ed.) Citation

Obee B and V. Evans. Upstream: Upper Intermediate B 2+, Teacher's Book. Наука, 2006.