APA (7th ed.) Citation

Observa. (1997). Observa Prøvevalg 1988, april-undersøgelsen ..: Observa Political Index Polls 1988: April .. Danish Data Archive.

Chicago Style (17th ed.) Citation

Observa. Observa Prøvevalg 1988, April-undersøgelsen ..: Observa Political Index Polls 1988: April .. Danish Data Archive, 1997.

MLA (9th ed.) Citation

Observa. Observa Prøvevalg 1988, April-undersøgelsen ..: Observa Political Index Polls 1988: April .. Danish Data Archive, 1997.

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