Light years ahead : The story of the PH lamp

MLA

Hansen, Ove, Steen Jørgensen, and Tina Jørstian. Light Years Ahead : The Story of the Ph Lamp. [s.l.]: Louis Poulsen, .199.

APA

Hansen, O., Jørgensen, S., & Jørstian, T. (.199). Light years ahead : The story of the PH lamp. [s.l.]: Louis Poulsen.

Chicago

Hansen, Ove, Steen Jørgensen, and Tina Jørstian. Light Years Ahead: The Story of the PH Lamp. [s.l.]: Louis Poulsen, .199.