APA (7th ed.) Citation

(1986). The Jurassic ammonite zones of the Soviet Union (2. pr.).

Chicago Style (17th ed.) Citation

The Jurassic Ammonite Zones of the Soviet Union. 2. pr. Boulder, Col, 1986.

MLA (9th ed.) Citation

The Jurassic Ammonite Zones of the Soviet Union. 2. pr. 1986.

Warning: These citations may not always be 100% accurate.