Gaya APA
SOBEL, M, A.
(1967).
TEACHING GENERAL MATHEMATICS
.
Englewood Cliffs, N J.:
PRENTICE HALL.
Gaya MLA
SOBEL, Max, A..
"TEACHING GENERAL MATHEMATICS".
Englewood Cliffs, N J.:
PRENTICE HALL,
1967.
Textbook.