APA (7th ed.) Citation

R, R., ET, B., TA, C., & H, F. (1971). X-rays from Centaurus A and the Far-Infrared Background Radiation. Science (New York, N.Y.), 171(3970), 500. https://doi.org/10.1126/science.171.3970.500

Chicago Style (17th ed.) Citation

R, Ramaty, Byram ET, Chubb TA, and Friedman H. "X-rays from Centaurus A and the Far-Infrared Background Radiation." Science (New York, N.Y.) 171, no. 3970 (1971): 500. https://doi.org/10.1126/science.171.3970.500.

MLA (9th ed.) Citation

R, Ramaty, et al. "X-rays from Centaurus A and the Far-Infrared Background Radiation." Science (New York, N.Y.), vol. 171, no. 3970, 1971, p. 500, https://doi.org/10.1126/science.171.3970.500.