Fernström, Å. I. B. (1962). Procaine allergy with reference to urticaria following procaine penicillin therapy.
Lua i Stíl Chicago (17ú heag.)Fernström, Åke I. B. Procaine Allergy with Reference to Urticaria Following Procaine Penicillin Therapy. 1962.
Lua MLA (8ú heag.)Fernström, Åke I. B. Procaine Allergy with Reference to Urticaria Following Procaine Penicillin Therapy. 1962.
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