Não informado. Northwestern Druggist. Iowa Pharmaceutical Association.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Northwestern Druggist. Minneapolis, Minn: Iowa Pharmaceutical Association.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Northwestern Druggist. Iowa Pharmaceutical Association.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.