Gaya APA
Ratcliffe, J, H., Sorg, E, T.
(2017).
Foot Patrol
(
1st ed.)
.
Cham:
Springer.
Gaya MLA
Ratcliffe, Jerry, H.., Sorg, Evan, T..
"Foot Patrol".
1st ed.
Cham:
Springer,
2017.
E Book.