Gaya APA

Swanson, C, P., Horst, H, V, D. (1964). **Gas-discharge tubes . Netherlands: Netherlands: Philips Technical Library; 1964.

Gaya MLA

Swanson, Carl, P.., Horst, H.L., Van, Der. "**Gas-discharge tubes". Netherlands: Netherlands: Philips Technical Library; 1964, 1964. Text.