Foster, M. (1982). Creating patterns from grasses, seeheads and cones. Pelham Books.
Cita Chicago (17th ed.)Foster, Maureen. Creating Patterns from Grasses, Seeheads and Cones. Singapore: Pelham Books, 1982.
Cita MLA (9th ed.)Foster, Maureen. Creating Patterns from Grasses, Seeheads and Cones. Pelham Books, 1982.
Atenció: Aquestes cites poden no estar 100% correctes.