Gaya APA

Burks, A., W. et al. (2020). Middleton's Allergy Principles and practice Volume 1 (9th ed.). Edinburgh: Elsevier.

Gaya MLA

Burks, A., W. et al.. Middleton's Allergy Principles and practice Volume 1. 9th ed. Edinburgh: Elsevier, 2020. Text.