Dyfyniad APA

British Psychological Society. (1953). Bulletin of the British Psychological Society. The Society.

Dyfyniad Arddull Chicago

British Psychological Society. Bulletin of the British Psychological Society. London: The Society, 1953.

Dyfyniad MLA

British Psychological Society. Bulletin of the British Psychological Society. The Society, 1953.

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