Παραπομπή σε μορφή APA (7η εκδ.)

CROCKETT, J. U., & THE EDITOR OF TIME-LIFE BOOK. (1977). Perennial: (the time-life encyclopaedia of gardening). Time-Life Books.

Παραπομπή σε μορφή Chicago (17η εκδ.)

CROCKETT, James Underwood, και THE EDITOR OF TIME-LIFE BOOK. Perennial: (the Time-life Encyclopaedia of Gardening). Alexandria: Time-Life Books, 1977.

Παραπομπή σε μορφή MLA (9th εκδ.)

CROCKETT, James Underwood, και THE EDITOR OF TIME-LIFE BOOK. Perennial: (the Time-life Encyclopaedia of Gardening). Time-Life Books, 1977.