Παραπομπή σε μορφή APA (7η εκδ.)

Tombs, M. (2015). European Patent EP1989517: Compensating for frequency change in flowmeters. European Patent Office.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Tombs, M. European Patent EP1989517: Compensating for Frequency Change in Flowmeters. European Patent Office, 2015.

Παραπομπή σε μορφή MLA (9th εκδ.)

Tombs, M. European Patent EP1989517: Compensating for Frequency Change in Flowmeters. European Patent Office, 2015.