Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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