Παραπομπή σε μορφή APA (7η εκδ.)

Samuel, H. R., & Farrar, D. M. (1988). Field study of filter drains on Maidstone by-pass, Kent. Transport and Road Research Laboratory.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Samuel, H. R., και D. M. Farrar. Field Study of Filter Drains on Maidstone By-pass, Kent. Crowthorne, Berkshire: Transport and Road Research Laboratory, 1988.

Παραπομπή σε μορφή MLA (9th εκδ.)

Samuel, H. R., και D. M. Farrar. Field Study of Filter Drains on Maidstone By-pass, Kent. Transport and Road Research Laboratory, 1988.