APA ציטוט

Roberts, D. H., Roy, V. N., & Ramsdale, D. R. (1991). Spontaneous pneumomediastinum following myocardial infarction. BMJ Group.

Citação norma Chicago

Roberts, D. H., V. N. Roy, and D. R. Ramsdale. Spontaneous Pneumomediastinum Following Myocardial Infarction. BMJ Group, 1991.

ציטוט MLA

Roberts, D. H., V. N. Roy, and D. R. Ramsdale. Spontaneous Pneumomediastinum Following Myocardial Infarction. BMJ Group, 1991.