Não informado. (1969). Progressive Horticulture. Hill Horticulture Development Board, Horticultural Experiments and Training.
Cita Chicago Style (17a ed.)Não informado. Progressive Horticulture. Chaubattia, India: Hill Horticulture Development Board, Horticultural Experiments and Training, 1969.
Cita MLA (8a ed.)Não informado. Progressive Horticulture. Hill Horticulture Development Board, Horticultural Experiments and Training, 1969.
Precaución: Estas citas no son 100% exactas.