APA Edition Citation

Gruffydd, B. (1987). Tree form size and colour. E & F N spon.

Chicago Edition Citation

Gruffydd, B. Tree Form Size and Colour. Londan: E & F N spon, 1987.

MLA Edition Citation

Gruffydd, B. Tree Form Size and Colour. E & F N spon, 1987.

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