Gaya APA

Grunwaid, O, E, A, H, A., Graves, R. (1978). Pruning and Grafting (Pertama). Alexandria, Va: Time-Life Books.

Gaya MLA

Grunwaid, Oliver, E, Allen, Henry, Anatole., Graves, Ralph. "Pruning and Grafting". Pertama Alexandria, Va: Time-Life Books, 1978. Text.