APA (7th ed.) Citation

Heitman, S. (1991). Soviet emigration in 1990.

Chicago Style (17th ed.) Citation

Heitman, Sidney. Soviet Emigration in 1990. Köln, 1991.

MLA (9th ed.) Citation

Heitman, Sidney. Soviet Emigration in 1990. 1991.

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