Page 177 - Mario Bigon "The Morrow Guide to Knots"

Method
Begin by making a
bight along the iine at
the point where the
loop is required (1).
Fold the bight back on
itself (2) and make two
turns around the
standing part (3),
taking care to keep the
arrangement of the line
in perfect order. Pass
the bight through the
eye on the left and
proceed to close the
knot (4), Figure 5
shows the knot
completed. The size of
the loop can be
adjusted at this point by
pushing the knot to the
right or left, making
sure that the internal
arrangement is not
upset. Tighten the knot
by pulling the two ends
of line and the loop (6).