APA
National Botanical Gardens; Lucknow, . (1958). Petunia. : .
Chicago
National Botanical Gardens; Lucknow, . 1958. Petunia. : .
Harvard
National Botanical Gardens; Lucknow, . (1958). Petunia. : .
MLA
National Botanical Gardens; Lucknow, . Petunia. : . 1958.