APA ציטוט

McKenzie, S., & Bush, A. (2002). Difficult asthma in children. BMJ Group.

Citação norma Chicago

McKenzie, S., and A. Bush. Difficult Asthma in Children. BMJ Group, 2002.

ציטוט MLA

McKenzie, S., and A. Bush. Difficult Asthma in Children. BMJ Group, 2002.