APA (7th ed.) Citation

Landscape Design Trust & Landscape Institute. (1990). Landscape design extra: The official journal of the Landscape Institute. Landscape Design Trust.

Chicago Style (17th ed.) Citation

Landscape Design Trust and Landscape Institute. Landscape Design Extra: The Official Journal of the Landscape Institute. Surrey [England]: Landscape Design Trust, 1990.

MLA (9th ed.) Citation

Landscape Design Trust and Landscape Institute. Landscape Design Extra: The Official Journal of the Landscape Institute. Landscape Design Trust, 1990.