Dyfyniad APA

Gago, c. b. J. M., & Carvalho, t. M. J. S. d. (1991). Science in Portugal. Europália - Portugal.

Dyfyniad Arddull Chicago

Gago, coord. by José Mariano, and translation Maria João Simões de Carvalho. Science in Portugal. Europália - Portugal, 1991.

Dyfyniad MLA

Gago, coord. by José Mariano, and translation Maria João Simões de Carvalho. Science in Portugal. Europália - Portugal, 1991.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.