Cita APA

Travers, P. L. (1973). Mary Poppins comes back. [S.l.]: Collins.

Citación estilo Chicago

Travers, P. L. Mary Poppins Comes Back. [S.l.]: Collins, 1973.

Cita MLA

Travers, P. L. Mary Poppins Comes Back. [S.l.]: Collins, 1973.