Lua APA (7ú heag.)

Van Wyk, H. (1997). Painting flowers: The Van Wyk way. Art Instruction Associates.

Lua i Stíl Chicago (17ú heag.)

Van Wyk, Helen. Painting Flowers: The Van Wyk Way. Rockport, Mass: Art Instruction Associates, 1997.

Lua MLA (9ú heag.)

Van Wyk, Helen. Painting Flowers: The Van Wyk Way. Art Instruction Associates, 1997.

Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.