Gaya APA
Sayer, I.A.. (1991).
Low-cost engineering measures .
:
TRRL.
Gaya Chicago
Sayer, I.A..
Low-cost engineering measures.
:
TRRL,
1991.
Chart.
Gaya MLA
Sayer, I.A..
Low-cost engineering measures.
:
TRRL,
1991.
Chart.
Gaya Turabian
Sayer, I.A..
Low-cost engineering measures.
:
TRRL,
1991.
Chart.