Gaya APA
536 PUZZLES & CURIOUS PROBLEMS. (1967).
New York:
Fontana.
Gaya Chicago
536 PUZZLES & CURIOUS PROBLEMS.
.
New York:
Fontana,
1967.
Text.
Gaya MLA
536 PUZZLES & CURIOUS PROBLEMS.
.
New York:
Fontana,
1967.
Text.
Gaya Turabian
536 PUZZLES & CURIOUS PROBLEMS.
New York:
Fontana,
1967.
Print.