Grönberg, Åke (Autor Personal)

Karlsson, K.-Å. Åke Grönberg, 1976 (subj.) title page (Åke Grönberg)

Gycklamas afton, [2018]: cast credits (Åke Grönberg)

Wikipedia, viewed September 13, 2019: Åke Grönberg page (Åke Grönberg; full name: Karl Åke Edvard Grönberg; singer, variety artist, actor; born in Stockholm on March 26, 1914 and died on September 15, 1969) https://en.wikipedia.org/wiki/%C3%85ke_Gr%C3%B6nberg