Gaya APA
HARKER, D, F., Association, U, S, G. (1993).
LANDSCAPE Restoration hanbook .
Boca Raton:
Lewis Publuishers.
Gaya MLA
HARKER, Donald, F.., Association, UNITED, States, Golf.
"LANDSCAPE Restoration hanbook".
Boca Raton:
Lewis Publuishers,
1993.
Buku.