Gaya APA
Leopold, A, C., Kriedemann, P, E.
(1975).
PLANT GROWTH AND DEVELOPMENT, second edition
.
USA:
mcgraw hill.
Gaya MLA
Leopold, A., Carl., Kriedemann, Paul, E.
"PLANT GROWTH AND DEVELOPMENT, second edition".
USA:
mcgraw hill,
1975.
Text.