Παραπομπή σε μορφή APA (7η εκδ.)

Não informado. Technical memorandum. Campden Food Preservation Research Association.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Não informado. Technical Memorandum. Chipping Campden, Inglaterra: Campden Food Preservation Research Association.

Παραπομπή σε μορφή MLA (8th εκδ.)

Não informado. Technical Memorandum. Campden Food Preservation Research Association.

Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.