Alpi, A. (1977). Flower formation in ornamentals. ISHS.
Chicago-čujuhus (17. p.)Alpi, A. Flower Formation in Ornamentals. La Haya: ISHS, 1977.
MLA-čujuhus (9. p.)Alpi, A. Flower Formation in Ornamentals. ISHS, 1977.
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