Cita APA

Lief, N. R. The Second year of life / Nina R. Lief, with Mary Ellen Fahs. U.S.A. : Walker Publishing Company.

Citación estilo Chicago

Lief, Nina R. The Second Year of Life / Nina R. Lief, With Mary Ellen Fahs. U.S.A. : Walker Publishing Company.

Cita MLA

Lief, Nina R. The Second Year of Life / Nina R. Lief, With Mary Ellen Fahs. U.S.A. : Walker Publishing Company.