APA (7th ed.) Citation

Mitchell, P. M. (1978). Vilhelm Groenbech. Twayne's world authors series.

Chicago Style (17th ed.) Citation

Mitchell, Phillip M. "Vilhelm Groenbech." Twayne's World Authors Series 1978.

MLA (8th ed.) Citation

Mitchell, Phillip M. "Vilhelm Groenbech." Twayne's World Authors Series, 1978.

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