APA (7th ed.) Citation

Croy, O. R. (1964). Retouching: Corrective techniques in photography (4th rev. ed.). Focal Point.

Chicago Style (17th ed.) Citation

Croy, O. R. Retouching: Corrective Techniques in Photography. 4th rev. ed. London: Focal Point, 1964.

MLA (9th ed.) Citation

Croy, O. R. Retouching: Corrective Techniques in Photography. 4th rev. ed. Focal Point, 1964.

Warning: These citations may not always be 100% accurate.