APA aipamena

CALLAHAN, M., & NICKANIS. (1990). Guide to shareware: Dr. File Finders. McGraw Hill.

Chicago Style aipamena

CALLAHAN, Mike, and NICKANIS. Guide to Shareware: Dr. File Finders. New York: McGraw Hill, 1990.

MLA aipamena

CALLAHAN, Mike, and NICKANIS. Guide to Shareware: Dr. File Finders. McGraw Hill, 1990.