Gaya APA

Pettersson, A, L, H., Joenoes, N, Z. (1991). Gastrointestinal and Urogenital Radiology : Nicer Series on Diagnostic Imaging (-). London: Merit Communication.

Gaya MLA

Pettersson, Anders, Lundrquist,, Huger., Joenoes, Nanizar, Zaman. "Gastrointestinal and Urogenital Radiology : Nicer Series on Diagnostic Imaging". - London: Merit Communication, 1991. Text.