Gaya APA

Swanson, C, P. et al (1971). Science citation index 1971 quarterly january-march . Philadelpia: Philadelpia: Institute for Scientific Information; 1971.

Gaya MLA

Swanson, Carl, P.. et al. "Science citation index 1971 quarterly january-march". Philadelpia: Philadelpia: Institute for Scientific Information; 1971, 1971. Text.