PARKINSON, C. N. (1972). The law of delayparkinsons irrefutable third law. Ballantine Books.
Lua i Stíl Chicago (17ú heag.)PARKINSON, C. Northcote. The Law of Delayparkinsons Irrefutable Third Law. Ballantine Books, 1972.
Lua MLA (8ú heag.)PARKINSON, C. Northcote. The Law of Delayparkinsons Irrefutable Third Law. Ballantine Books, 1972.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.