APA Style
Havighurg, Robert J.. (1972).
Development tasks and education .
New York:
David Mckay Company.
Chicago Style
Havighurg, Robert J..
Development tasks and education.
New York:
David Mckay Company,
1972.
teks.
MLA Style
Havighurg, Robert J..
Development tasks and education.
New York:
David Mckay Company,
1972.
teks.
Turabian Style
Havighurg, Robert J..
Development tasks and education.
New York:
David Mckay Company,
1972.
teks.