APA (7th ed.) Citation

Lidholm, I., Segerstam, L., & Olofsson, Å. Greetings from an Old World: (1976).

Chicago Style (17th ed.) Citation

Lidholm, Ingvar, Leif Segerstam, and Åke Olofsson. Greetings from an Old World: (1976).

MLA (9th ed.) Citation

Lidholm, Ingvar, et al. Greetings from an Old World: (1976).