APA (7th ed.) Citation

Cramer, G., Sannerstedt, R., Thulesius, O., & Werko, L. (1961). Cardiac arrhythmias and Quinidine. Astra, Sweden.

Chicago Style (17th ed.) Citation

Cramer, Gun, Rune Sannerstedt, Olav Thulesius, and Lars Werko. Cardiac Arrhythmias and Quinidine. Sodertalje: Astra, Sweden, 1961.

MLA (8th ed.) Citation

Cramer, Gun, et al. Cardiac Arrhythmias and Quinidine. Astra, Sweden, 1961.