Working-Party on Greenhouse Chrysanthemum Naaldwijk, Netherlands, International Society for Horticultural Science. Section for Ornamental Plants, International Society for Horticultural Science. Commission Protected Cultivation, & Heij, G. (1987). Working-Party on Greenhouse Chrysanthemum: Naaldwijk, Netherlands, 21-24 April 1986. International Society for Horticultural Science.
Lua i Stíl Chicago (17ú heag.)Working-Party on Greenhouse Chrysanthemum Naaldwijk, Netherlands, International Society for Horticultural Science. Section for Ornamental Plants, International Society for Horticultural Science. Commission Protected Cultivation, agus G. Heij. Working-Party on Greenhouse Chrysanthemum: Naaldwijk, Netherlands, 21-24 April 1986. Wageningen, The Netherlands: International Society for Horticultural Science, 1987.
Lua MLA (8ú heag.)Working-Party on Greenhouse Chrysanthemum Naaldwijk, Netherlands, et al. Working-Party on Greenhouse Chrysanthemum: Naaldwijk, Netherlands, 21-24 April 1986. International Society for Horticultural Science, 1987.