Cita APA (7th ed.)

SCHUMACHER E F. (1978). GUIDE FOR THE PERPLEXED. ABACUS PRESS.

Cita Chicago (17th ed.)

SCHUMACHER E F. GUIDE FOR THE PERPLEXED. LONDON: ABACUS PRESS, 1978.

Cita MLA (9th ed.)

SCHUMACHER E F. GUIDE FOR THE PERPLEXED. ABACUS PRESS, 1978.