Symposium on Horticultural Economics Zaragoza, Spain, International Society for Horticultural Science. Commission for Horticultural Economics, International Society for Horticultural Science. Commission for Labour and Labour Management in Horticulture, Symposium on Labour and Labour Management, Haan, W. G. d., Amorós, E. P., . . . Pintos, A. d. V. (1984). Eighth Symposium on Horticultural Economics; Tenth Symposium on Labour and Labour management: Zaragoza, Spain, March 26-30, 1984. International Society for Horticultural Science.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Symposium on Horticultural Economics Zaragoza, Spain, International Society for Horticultural Science. Commission for Horticultural Economics, International Society for Horticultural Science. Commission for Labour and Labour Management in Horticulture, Symposium on Labour and Labour Management, W. G. de Haan, Emilia Puig Amorós, Carmen Casado Salinas, و Antonio del Valle Pintos. Eighth Symposium on Horticultural Economics; Tenth Symposium on Labour and Labour Management: Zaragoza, Spain, March 26-30, 1984. Wageningen, Netherlands: International Society for Horticultural Science, 1984.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Symposium on Horticultural Economics Zaragoza, Spain, et al. Eighth Symposium on Horticultural Economics; Tenth Symposium on Labour and Labour Management: Zaragoza, Spain, March 26-30, 1984. International Society for Horticultural Science, 1984.