APA (7th ed.) Citation

Gan & Heng. (1993). Pack and stack. Federal Publications.

Chicago Style (17th ed.) Citation

Gan and Heng. Pack and Stack. Singapore: Federal Publications, 1993.

MLA (8th ed.) Citation

Gan and Heng. Pack and Stack. Federal Publications, 1993.

Warning: These citations may not always be 100% accurate.