APA-čujuhus (7. p.)
Hubbard, L. R. (2012). Horticulture: For a greener world. Bridge Publications.
Chicago-čujuhus (17. p.)
Hubbard, L. Ron. Horticulture: For a Greener World. Commerce, California: Bridge Publications, 2012.
MLA-čujuhus (9. p.)
Hubbard, L. Ron. Horticulture: For a Greener World. Bridge Publications, 2012.
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