Gaya APA

Tandberg, E., Swanson, C, P. (1967). Solar Activity . Waltham: Waltham: Blaisdell; 1967.

Gaya MLA

Tandberg, Einar., Swanson, Carl, P.. "Solar Activity". Waltham: Waltham: Blaisdell; 1967, 1967. Text.