APA (7th ed.) Citation

Laszlo, P. d., & Baldry, A. (1947). Painting a Portrait How to do it Number Six. The Studio Publications.

Chicago Style (17th ed.) Citation

Laszlo, P.A. de, and A.L Baldry. Painting a Portrait How to Do It Number Six. The Studio Publications, 1947.

MLA (8th ed.) Citation

Laszlo, P.A. de, and A.L Baldry. Painting a Portrait How to Do It Number Six. The Studio Publications, 1947.

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