Dyfyniad APA

Bellamy, E., & Schindler, S. (1889). Ein Rückblick (Looking backward): 2000-1887. Houghton, Mifflin and Company.

Dyfyniad Arddull Chicago

Bellamy, Edward, and Solomon Schindler. Ein Rückblick (Looking Backward): 2000-1887. Boston and New York: Houghton, Mifflin and Company, 1889.

Dyfyniad MLA

Bellamy, Edward, and Solomon Schindler. Ein Rückblick (Looking Backward): 2000-1887. Houghton, Mifflin and Company, 1889.

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