BUSCADOR DE RECURSOS UNSAM

Cita APA (7a ed.)

Menzel, D. H. (1953). Flying saucers. Harvard University Press.

Cita Chicago Style (17a ed.)

Menzel, Donald H. Flying Saucers. Cambridge: Harvard University Press, 1953.

Cita MLA (8a ed.)

Menzel, Donald H. Flying Saucers. Harvard University Press, 1953.