APA Style

Britian, B, M, A, F, C, S, O, G. (2021). British national formulary.81 (81st (March - September) ed). London: Pharmaceutical Press.

MLA Style

Britian, British, Medical, AssociationJoint, Formulary, CommitteePharmacutical, Society, Of, Great. "British national formulary.81". 81st (March - September) ed London: Pharmaceutical Press, 2021. Text.