APA
CHRISTOPHER E., . (1958). INTRODUCTORY HORTICULTURE. NEW YORK: McGRAW-HILL BOOK COMPANY.
Chicago
CHRISTOPHER Everett.P, . 1958. INTRODUCTORY HORTICULTURE. NEW YORK: McGRAW-HILL BOOK COMPANY.
Harvard
CHRISTOPHER E., . (1958). INTRODUCTORY HORTICULTURE. NEW YORK: McGRAW-HILL BOOK COMPANY.
MLA
CHRISTOPHER Everett.P, . INTRODUCTORY HORTICULTURE. NEW YORK: McGRAW-HILL BOOK COMPANY. 1958.