Gaya APA
Gabrielsen, M, A. (1987).
Swimming pools : a guide to their planning design and operation (4th ed).
Champaign, IL:
Human Kinetics.
Gaya MLA
Gabrielsen, M., Alexander.
"Swimming pools : a guide to their planning design and operation".
4th ed
Champaign, IL:
Human Kinetics,
1987.
Text.