Cita APA (7a ed.)

Spencer, H., & Reynolds, L. (1977). Directional signing and labelling in libraries and museums: A review of current theory and practice. Readability of Print Research Unit Royal College of Art.

Cita Chicago Style (17a ed.)

Spencer, Herbert, y Linda Reynolds. Directional Signing and Labelling in Libraries and Museums: A Review of Current Theory and Practice. [London]: Readability of Print Research Unit Royal College of Art, 1977.

Cita MLA (9a ed.)

Spencer, Herbert, y Linda Reynolds. Directional Signing and Labelling in Libraries and Museums: A Review of Current Theory and Practice. Readability of Print Research Unit Royal College of Art, 1977.