Gaya APA

RUIZ, M, A, G. (2003). Mutual assistance for the recovery of tax calims (1, cet. 1). London: Kluwer Law International.

Gaya MLA

RUIZ, Maria, Amparo, Grau. "Mutual assistance for the recovery of tax calims". 1, cet. 1 London: Kluwer Law International, 2003. Buku.