Gaya APA

Classen, A., FUCHS, T. (2015). Occupational allergy to β-lactam antibiotics (Allergo J Int 2015; 24: 54–7). German: Springer.

Gaya MLA

Classen, Anna., FUCHS, THOMAS. "Occupational allergy to β-lactam antibiotics". Allergo J Int 2015; 24: 54–7 German: Springer, 2015. Text.