APA način citiranja

Bethell, H. J., & Nixon, P. G. (1974). Electrical and mechanical aspects of left atrial activity.

Čikaški stil citiranja

Bethell, H J., i P G. Nixon. Electrical and Mechanical Aspects of Left Atrial Activity. 1974.

MLA način citiranja

Bethell, H J., i P G. Nixon. Electrical and Mechanical Aspects of Left Atrial Activity. 1974.