Cita APA

Butler, J., & Martin, B. (2002). Detection of pneumoperitioneum on erect chest radiograph. BMJ Group.

Chicago Style Citation

Butler, J., i B. Martin. Detection of Pneumoperitioneum On Erect Chest Radiograph. BMJ Group, 2002.

Cita MLA

Butler, J., i B. Martin. Detection of Pneumoperitioneum On Erect Chest Radiograph. BMJ Group, 2002.

Atenció: Aquestes cites poden no estar 100% correctes.