Sánchez, I. (2003). O Egas e o Becas fazem uma viagem. RBA(Editores).
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিSánchez, Isidro. O Egas E O Becas Fazem Uma Viagem. RBA(Editores), 2003.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিSánchez, Isidro. O Egas E O Becas Fazem Uma Viagem. RBA(Editores), 2003.
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