APA
Greulach, . (1976). Plants an int. to modern botany. New Delhi: John Wiley & Sons.
Chicago
Greulach, . 1976. Plants an int. to modern botany. New Delhi: John Wiley & Sons.
Harvard
Greulach, . (1976). Plants an int. to modern botany. New Delhi: John Wiley & Sons.
MLA
Greulach, . Plants an int. to modern botany. New Delhi: John Wiley & Sons. 1976.
