APA ציטוט

BUCHDAHL, R., WARD, S., & SUMMERFIELD, A. (2000). Spacer devices in asthma. BMJ Group.

Citação norma Chicago

BUCHDAHL, R., S. WARD, and A. SUMMERFIELD. Spacer Devices in Asthma. BMJ Group, 2000.

ציטוט MLA

BUCHDAHL, R., S. WARD, and A. SUMMERFIELD. Spacer Devices in Asthma. BMJ Group, 2000.