Cita APA

Smiles, S., & Bower, R. L. (1889). Self-help (Rev. and enl. ed.). The Pioneer press.

Citación estilo Chicago

Smiles, Samuel, and Ralph Lytton Bower. Self-help. Rev. and enl. ed. [Chicago]: The Pioneer press, 1889.

Cita MLA

Smiles, Samuel, and Ralph Lytton Bower. Self-help. Rev. and enl. ed. The Pioneer press, 1889.