APA (7th ed.) Citation

Décsy, G. (1986). Statistical report on the languages of the world as of 1985. Eurolingua.

Chicago Style (17th ed.) Citation

Décsy, Gyula. Statistical Report on the Languages of the World as of 1985. Bloomington, Ind.: Eurolingua, 1986.

MLA (9th ed.) Citation

Décsy, Gyula. Statistical Report on the Languages of the World as of 1985. Eurolingua, 1986.