Gaya APA

The future as the presence of shared hope, edited with an introd.by Maryellen Muckenhirn. . (1968). New York: Sheed & Ward.

Gaya MLA

The future as the presence of shared hope, edited with an introd.by Maryellen Muckenhirn. . . New York: Sheed & Ward, 1968. Buku.