Gaya APA
Douglass, Harl R. (1947).
The High School Curriculum .
Boulder, Colorado:
.
Gaya Chicago
Douglass, Harl R.
The High School Curriculum.
Boulder, Colorado:
,
1947.
.
Gaya MLA
Douglass, Harl R.
The High School Curriculum.
Boulder, Colorado:
,
1947.
.
Gaya Turabian
Douglass, Harl R.
The High School Curriculum.
Boulder, Colorado:
,
1947.
.