Gaya APA
Sommer, Robert. (1986).
A Practical guide to behavioral research : tools and techniques (Ed. 2.).
New York:
Oxford University Press.
Gaya Chicago
Sommer, Robert.
A Practical guide to behavioral research : tools and techniques.
Ed. 2.
New York:
Oxford University Press,
1986.
Text.
Gaya MLA
Sommer, Robert.
A Practical guide to behavioral research : tools and techniques.
Ed. 2.
New York:
Oxford University Press,
1986.
Text.
Gaya Turabian
Sommer, Robert.
A Practical guide to behavioral research : tools and techniques.
Ed. 2.
New York:
Oxford University Press,
1986.
Print.