एपीए उद्धरण

Ferwerda, F. P. (1969). Outlines of perennial crop breeding in the tropics. H Veenman &Zonen.

शिकागो स्टाइल उद्धरण

Ferwerda, F P. Outlines of Perennial Crop Breeding in the Tropics. Netherland: H Veenman &Zonen, 1969.

एमएलए उद्धरण

Ferwerda, F P. Outlines of Perennial Crop Breeding in the Tropics. H Veenman &Zonen, 1969.