APA

Chittenden F. J., Synge P. M. & The Royal Horticultural Society. (1956). Dictionary of gardening : a practical and scientific encyclopeaedia of horticulture. Volume 4 : PT-ZY. Oxford: Oxford University Press.

Chicago

Chittenden Fred J, Synge Patrick M and The Royal Horticultural Society. 1956. Dictionary of gardening : a practical and scientific encyclopeaedia of horticulture. Volume 4 : PT-ZY. Oxford: Oxford University Press.

Harvard

Chittenden F. J., Synge P. M. and The Royal Horticultural Society. (1956). Dictionary of gardening : a practical and scientific encyclopeaedia of horticulture. Volume 4 : PT-ZY. Oxford: Oxford University Press.

MLA

Chittenden Fred J, Synge Patrick M and The Royal Horticultural Society. Dictionary of gardening : a practical and scientific encyclopeaedia of horticulture. Volume 4 : PT-ZY. Oxford: Oxford University Press. 1956.