Koala by Kunihiko Kasahara

Diagrams in Origami Omnibus by Kunihiko Kasahara
Folded from a square of thin wrapping paper

Koala by Paul Jackson

Diagrams in Origami Zoo by Paul Jackson and Miri Golan
Folded from a square of kraft origami paper

Koala by Seo Won Seon (Redpaper)

Diagrams in Creative Origami by Seo Won Seon and Lee In Kyung (Red and White Paper)
Folded from a square of Unryu paper

Koala on stump by Steven Casey

Diagrams in Origami USA Convention 1990
Diagrams in Origami USA Convention 1997
Diagrams in MFPP 1998 Convention
Diagrams in Origami USA Convention 1985
Diagrams in The Best of Annual Collections 1981-1995
Wet-folded from a square of double-sided mulberry paper

Koala by Taichiro Hasegawa

Diagrams in Double-sided origami by Taichiro Hasegawa
Diagrams in NOA Magazine 113
Folded from a square of duo origami paper

Koala by Watanabe Dai

Diagrams in Origami Tanteidan Magazine 101
Folded from a square of kraft origami paper

Koala by Yoshihide Momotani

Diagrams in BOS Convention 1986 Spring
Diagrams in Le Pli 27
Diagrams in NOA Magazine 522
Diagrams in Origami - Easy-to-Make Paper Creations by Gay Merrill Gross
Diagrams in Origami Animals by Yoshihide Momotani
Diagrams in Origami Animals (2001) by Yoshihide Momotani
Diagrams in Orison 24/04
Diagrams in Quadrato Magico Magazine 14
Diagrams in Quarterly ORU Folding Diagrams - Vol. 2
Diagrams in The New Origami by Steve and Megumi Biddle
Diagrams in The Paper Magazine 95
Folded from a square of kraft paper

Koala on a branch by Gareth Louis

Diagrams in Origami USA Convention 2005
Wet-folded from a square of double-sided mulberry paper

Koala on a branch by Steven Casey

Diagrams in BOS Convention 1982 Spring
Wet folded from a square of double-sided mulberry