Kendris, C. (1996). 501 [i.e. quinientos uno] spanish verbs (4.). Barron's Educational Series.
Lua i Stíl Chicago (17ú heag.)Kendris, Christopher. 501 [i.e. Quinientos Uno] Spanish Verbs. 4. San José, C.R.: Barron's Educational Series, 1996.
Lua MLA (8ú heag.)Kendris, Christopher. 501 [i.e. Quinientos Uno] Spanish Verbs. 4. Barron's Educational Series, 1996.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.