Mitchell, P. M. (1978). Vilhelm Groenbech. Twayne's world authors series.
Chicago Style (17th ed.) CitationMitchell, Phillip M. "Vilhelm Groenbech." Twayne's World Authors Series 1978.
MLA (9th ed.) CitationMitchell, Phillip M. "Vilhelm Groenbech." Twayne's World Authors Series, 1978.
Warning: These citations may not always be 100% accurate.