Gaya APA
Jeffrey, Richard. (1981).
Formal logic : its scope and limits / Richard Jeffrey (Ed.2).
New York:
McGrawhill.
Gaya Chicago
Jeffrey, Richard.
Formal logic : its scope and limits / Richard Jeffrey.
Ed.2
New York:
McGrawhill,
1981.
Textbook.
Gaya MLA
Jeffrey, Richard.
Formal logic : its scope and limits / Richard Jeffrey.
Ed.2
New York:
McGrawhill,
1981.
Textbook.
Gaya Turabian
Jeffrey, Richard.
Formal logic : its scope and limits / Richard Jeffrey.
Ed.2
New York:
McGrawhill,
1981.
Textbook.