Lua APA (7ú heag.)

JOSE.V.T & D'SOUZA, G. &. J. (2015). EASY MATHS -4. FRANK EDUCATIONAL AIDS.

Lua i Stíl Chicago (17ú heag.)

JOSE.V.T & D'SOUZA, GEORGE.A & JOSEPH. EASY MATHS -4. FRANK EDUCATIONAL AIDS, 2015.

Lua MLA (9ú heag.)

JOSE.V.T & D'SOUZA, GEORGE.A & JOSEPH. EASY MATHS -4. FRANK EDUCATIONAL AIDS, 2015.

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